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Auteur: jan-willem
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WHY2025 Challenge: Trash or Treasure?
Yuri brought a dual custody money box to the What Hackers Yearn 2025 (WHY2025) lockpicking village, and challenged us to pick it. Several lockpickers gave it a fair attempt, but with limited tooling the box remained shut. After WHY2025 I’ve brought it home, made custom lockpicks, and eventually managed to pick it and open the box. This blog is the complete story, from receiving the box to making a key for it.
WHY2025 (https://why2025.org/) is a quadrennial outdoors hacker event, a conference where people teach other people. This edition was from the 8th to 12th of August 2025 in Geestmerambacht in the Netherlands. Toool has a long track record of teaching lockpicking at these events. When you become a regular, others will start to plan for it as well. Several hackers brought the locked objects for us to pick.
One such challenge, Yuri’s box with two keyholes and just one key, appeared in the village. Yuri wrote on the chest, ‘Trash or treasure? Let me know if you open it!’ and included their contact details. After several people attempted the box, we were nearing the end of the event. I’ve contacted Yuri and discussed options. Them was fine with me bringing the box home to give it a fair attempt.
The chest was curious to me as it has two keyholes, which can be a dual custody, a mechanical version of the four eyes principle. To open such a system, both key owners need to be present with their key. Several variations exist. Either where key A or B open the box, where key B is used after key A, and very rarely the dual custody where key A and key B need to be present at the same time. Without any knowledge of the internals of this specific chest, your guess will be as good as mine. My guesses were that the key didn’t belong to the chest, second that both locks are independent, and third that one lock rotated clockwise, and the other counterclockwise. Of course, all three assumptions were wrong, as we’ll see later.
I’ve started my investigation by making a few simple lever wire picks, and quickly progressed to making custom 2-in-1 lever tools. The process is quite nice, even if it takes some trial and error to get right. I’ve ended up making two, one from brass and one from 304 stainless tubing. For the picking tips, 1.5 mm thick brass was cut into 4mm wide strips. One side gets a concave cutout to match the shape of the tube, to which it is silver soldered with high heat. The tips are then cut to the correct length, and rounded over with a file. While these tips can be shaped with needle files, it’s a tradeoff as they can’t stand much abuse.
After attempting for an evening without luck, picking, I chose to use a fiber scope to look inside the lock. It was slightly tricky to position the fiber and interpret what I was looking at, but I eventually determined there was just one bolt and both locks should rotate clockwise. I was slightly confused by the left-hand side (LHS), which appeared to have a form of warding in the keyway. This turned out to be a stop for the LHS key.
I’ve managed to pick the lock by inserting and rotating the key in the LHS clockwise, and inserting the fiber through the same keyhole to observe the lever at the RHS. With this, I’ve managed to pick the RHS of the lock. Even with all of this, it still is not an easy lock to pick.
The box was quite dirty inside and required a quick clean and some disassembly. In the pictures below, you can clearly see the mechanism, a ten lever lock spread over two keyways. With the lock open, I’ve opted to design a quick lever lock key builder in OpenSCAD and printed a fully functioning key. While not the most durable, in the correct printing orientation, PETG is fine for a temporary key. The key can later be copied to a metal blank.
The box is a treasure, and the box held Fl. 0.31 inside. Three dubbeltjes, and a cent. This would be about €1 in 2025 after inflation. The newest coin was from 1959, which usually means that the manufacturing date is before ’59. Digging further, I’ve found the markings “D.R.G.M. 1468402” – which is the German patent number from 1939 according to Wikipedia. Other scribbles were not too useful. However, a tiny bird, not even five by five millimeter, whispered the chest was made during WWII.
Through the great invention called the internet, I’ve found an owner of a similar chest. Their box was stamped 1940, with the ugly bird, and the full name of the factory, “Louis Walther & co, Chemnitz”. The document below from https://sachsen.digital/werkansicht/233660/1 completes the history for me. While we still don’t know why Germany desperately needed dual custody geldschranken, what the patent was for, or how it traveled to eventually end up with me.
Blog CCBY4.0 Jan-Willem Markus @ Toool Blackbag. If you want to play with the chest someday, do let me know. You may borrow it without keys, nor tools, so you can open it from scratch 🙂
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Bookleg: Locksport
Dear hacker friends, it has been brought to our attention that physical bootleg copies of Locksport are in circulation. While imitation is the sincerest form of flattery, bootleg copies are a near 1:1 copy without any additions or changes. This is uninspiring freeloading.
At the moment of writing, two official versions of Locksport by No Starch Press are in circulation, the Defcon version which doubles as the uncorrected proof with 367 pages, and the release version with 383 pages. Several pre-print versions of selected chapters were shared as PDF for preordered books directly from No Starch Press. Similarly, a DRM-free copy is included with the purchase of physical copies.
After thorough investigation — by placing the copies next to the original work and comparing the differences — we have determined several key differences. Please take your copy from the shelf and compare it to the pictures below.The book on the left of the image is the version released by No Starch Press. This book measures 177 mm in width and 235 mm in height. 7″ by 9.25″. The bootleg copy measures a centimeter (50/127″) smaller in the width. This resulted in the image depicting the authors with their favorite tools seemingly squished, and two more black lines on the bottom are added, The No Starch Press logo is slightly more oval as well. You may also note the slightly more orange tint of yellow used in the bootleg copy.
The book on the bottom of the image is the version released by No Starch Press. The differences are quite clear, where the original has the full name written out, the bootleg has the title and subtitle on the edge. The names on the No Starch Press version are the last names of the authors, and the bootleg version has the full names as shown on the cover.
The last difference we want to share is the glaring lack of color in the pages of the bootleg copy. The authors of Locksport and No Starch Press take pride in the full color images in the original book. This makes this book a bit more expensive, but the results are totally worth it.
Thanks, Jos, for lending me the bootleg copy of the book and the pictures for this blog. I’m glad you can laugh about it.
All No Starch Press copies have several key indicators to make counterfeit books practically impossible. Before accepting a Locksport book, please check if the book is legitimate. Furthermore, if you ask the authors to sign your counterfeit book, it’ll be ceremoniously thrown through the room, and you are expected to be uninvited to all Locksport authors birthday parties.
We will keep monitoring the situation and keep the hacker community up to date when new discoveries are made. Thanks for your continued support!CCBY4.0 Jan-Willem Markus. Toool Blackbag
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Miniature Roman golden lock measures just 11 by 12 mm
On November 14th 2024, the Landschaftsverband Westfalen-Lippe (LWL) at Münster presented a tiny golden lock from around the year 400 (1600 years ago). This news was published on the 28th of January by the LWL, and widely shared. Most articles written on the topic used the smallest version of the photos they could find, and glanced over the details. We chose to write this article after re-discovering the original article and studying the inner workings of the lock.
Feel free to check out the original article, first. The article has loads more details on the history, as well as videos of the CT scan and the working principle of the 4x model: https://www.lwl.org/pressemitteilungen/nr_mitteilung.php?urlID=60628
This is the lock itself on a black background. The Lock is 11 mm by 12mm in size. DKZ 3619,0094:109 – Fundnr. 15. Photo copyright: LWL /S. Brentführer While it doesn’t look too special at first glance, this lock is s quite an engineering marvel. At just 11 mm high with a diameter of 12 mm, it’s tiny. The engineering is quite similar to engineering in horology and takes incredible skill to make something like this today, let alone with the tools from 1600 years ago.
The lock looks great from the outside, but to really, appreciate the complexity. We will have to look at the Neutron tomography CT-scan the researchers created. The images may not look like much to the untrained eye, but the researchers published the post-processed images to show the specific parts.
CT-scan (Neutron tomography) of the lock revealed the inner workings of the lock.
Photo copyright: Paul-Scherrer-Institut/Villigen [CH]/ David MannesThe next image is the processed CT-scan where specific parts are colored. The article gives the following explanation: frame with spring (red), bolt (blue), broken bolt (?) (yellow), piece of the key (green), baseplate (purple) and inserted chain link (orange). The original article provides a video of the CT-scan as well. The video is in the attachments to the original article, with the name: “Anlage 1: Dosenschloss_Neutronen_CT_Animation.avi”.
This image shows four views of the processed CT-scan. Three side views and one top view.
Photo copyright: Paul-Scherrer-Institut/Villigen (Schweiz)/David Mannes; Montage: LWL/Corinna HildebrandWith the information from the CT-scan, Stefan Brentführer set out to make a functioning replica. He chose to make the replica larger, likely to better show how the lock works, as well as it is easier to work on larger parts. This exploded view is quite well done, but it doesn’t show clearly how the parts fit together. If you are up to the task, take a moment to puzzle to see how these pieces fit together.
Replica of the lock at a 4:1 scale. DKZ 3619,0094:109 – Fundnr. 15.
Photo copyright: LWL /Stefan BrentführerWhile locks which require a rotational motion to open can only be opened in either clockwise or counter-clockwise rotation, this lock operates clockwise, as do most locks in use today. Does someone know examples of counter-clockwise operating locks from 1600 years ago?
I’ve puzzled that the steel piece in the middle fits upright and horizontal on the round backplate. It has a matching piece which fits the rectangle hole. This leaves a square opening for the square linkage. The second diagonal rectangle hole is for the round post. (Yes, this tiny lock has a pipe key!) The cutout on the key corresponds to the bridge on the middle plate. From there it got confusing, and where I got some help. The bolt fits under the bridge into a barely visible rectangle hole to the top left next to the spring.
Single frame from the video demonstrating the workings of the lock.
Photo copyright: LWL /Stefan BrentführerThe lock’s operating is rather clever as it reuses the spring to keep the bolt in place in either positions. With the bolt closed and the key rotating in the clockwise direction, the fat bit of the key pushing down the spring that traps the bolt in the locked position. The triangle tip of the key perfectly fits the triangle cutout on the bolt. The bolt is moved on top of the spring, while the key holds the spring down. The closing operation is identical, but in reverse. Stefan Brentführer made a video of the operation and added it to the original article under “Anlage 2: Dosenschloss_Rekonstruktion_Schliessvorgang.MP4”.
Toool didn’t have a role in the research, but we believe these moments should be chearished and the news shared widely. My contribution, beside this blog, was the work to demonstrate how small the lock really is. I’ve made a mock-up of the lock in OpenSCAD and printed a copy with an FFF 3D printer. The files are attached, in case you are curious or want to print your own.
3D printed mock-up of the lock in purple filament on top of a cabinet lock with very much the same mechanism but designed as a mass-produced low security product. CCBY4.0 Jan-Willem Markus. Toool Blackbag. Nigel from Toool UK went a different route, and chose to model the mechanism in a 3D CAD program, with great result!
A 3D render of Nigels model. Photo copyright Nigel K. Tolley. Toool UK. The photos in this post are mostly from LWL /S. Brentführer. They kindly give permission to share the pictures in the context of the finding. The article is the creative work of Jan-Willem Markus. This text is copyright CCBY4.0 Toool Blackbag.
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Dutch open lockpicking 2024 at LockCon
The Dutch open lockpicking is one of the largest lockpicking competitions of its kind. In several rounds with ever more complicated locks the participants attempt to open the locks as quickly as possible to secure their place in the finals.
The qualifier consisted of six tables with ten participants at each table. In ten rounds of five minutes each, the participants decided who continued into the quarter-finals. The best three of each table, eighteen in total, continued. From there, more difficult locks were introduced. The competition went from eighteen to nine to three participants. The complete rule set can be viewed at https://blackbag.lockcon.nl/?p=4652
For the five minute locks we had a wide selection consisting of, Eras, Destil, Kibb, Yale, Mastermate, Dom, Basi, Nemef, and several others. For the fifteen minute rounds we introduced more difficult locks, including Winkhaus, CES 1SB, Gege ANS2, DOM Plura, DOM Sigma, Oxloc, and more.
While we cannot make guarantees, we strive for consistency.
You’ll very likely encounter the same or similar locks in the next competitions at LockCon.
The final score of the Dutch open lockpicking at LockCon 2024. 
Dutch open lockpicking 2024 at LockCon. Henri (3rd), Nitiflor (1st), Walter (2nd) Nitiflor won the competition by opening the most locks in the finals. He won the Multipick Elite Locknoob set with 39-pieces. Walter placed second and picked the Multipick Quick easy pro key duplication kit as his prize. Henri received a Sparrows Kirigami lockpick set as the third place winner. These prices were kindly sponsored by Multipick and Sparrows.
We are hosting a lockpicking competition like this one almost every year, and we hope to see you at the next one.
Scores of the half finals for inspiration -
Dutch open impressioning 2024 at LockCon
The Dutch open impressioning is traditionally the first of the large competitions at LockCon. The challenge in impressioning is to make a working key by reading the feedback from the lock and adjusting the key accordingly. Eventually the lock opens, and the opening time is registered. The most consistent and fastest impressioners get to attempt another six locks in the finals. This year, 40 people joined the competition. The complete rule set can be viewed at https://blackbag.lockcon.nl/?p=4652
For this years competition, two locks were to be opened in the qualifier. This was a little confusing for some, but the effect was clear. By opening more locks, we have effectively reduced the luck factor and rate the participants on their skill. All twelve finalists opened both the qualifier locks.
Dutch open impressioning 2024 at LockCon. A Finale: Torsten (3rd), Jos (1st), Lasse (2nd) Jos won the competition by opening the most locks in the fastest time. He picked the Multipick Kronos electropick. Lasse won second place and received the Multipick Quick easy pro key duplication kit. Torsten placed third and chose a Mulipick cutaway training lock as his price. These prices were kindly sponsored by Multipick.
Dutch open impressioning 2024 at LockCon. B Finale: Rubberbanned (3rd), Cocolitos (2nd), Oli (1st) The B finals in Impressioning was win by Oli, who received the new Multipick advanced Sandman lockpick set. The second prize in this final went to Cocolitos, who picked a Multipick triple gauge lockpick set. Rubberbanned received third place and won a Multipick cutaway training lock. These prices were kindly sponsored by Multipick.
We are looking forward to organizing the next impressioning competition at the next LockCon. In the meantime, SSDeV will hopefully organize an event as well.
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Toool NL competition
In the Toool NL competition, the Toool members compete by picking a selection of locks during Toool meetings. This year was the 19th Toool competition, with 45 meetups and at least a hundred hours to attempt these locks. However, only the quickest opening time for each competitor counted.
The points are assigned by opening times, where the quickest opening gets ten points, the second-quickest gets nine points, and so on. Sometimes points are shared when several people have the same opening time, or opened the lock within five seconds. (We count these as the same opening time, as we have a lockpicking competition and not a stopwatch operating competition.) The full breakdown of the competitions, locks, statistics, and the rules in Dutch can be found on. https://toool.nl/competitie/
The competition went strong, from the first meetup after LockCon already many competitive times were set. More locks were opened every meetup, and the opening times were significantly reduced. The locks which were predicted to be difficult were not, while difficult locks were underestimated. The competition remained close until the end. The analysis on lock difficulty is found at https://blackbag.lockcon.nl/?p=4684.
Screenshot of the competition score. https://toool.nl/competitie2024/ 
Tom (3rd), Walter (1st), Henri (2nd) Walter won the competition and received a Multipick Ares Disc detainer lockpick. Henri, with second place, chose the new Multipick Elite dimple picks community edition. Tom, who place third, won the Sparrows Vorax set. These prices were kindly sponsored by Multipick and Sparrows.
The next competition has started. Do you want to join this one as well? Become a member, and join us at the Toool meetups in Amsterdam and Eindhoven. May the best picker win. https://toool.nl/competitie2025/
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Toool NL competition 2024 – analysis
The 19th Toool NL competition is concluded (https://toool.nl/competitie/). The Toool members worked on lockpicking a set of 27 locks over a period of one year, and registered the quickest opening times. The full competition details can be found on https://toool.nl/competitie2024/.
Before we started picking, Walter asked the Toool members to make a guess on the best opening times for each lock. With this data he expected to see which locks are perceived to be difficult, but were not, or vice versa. Four lockpickers made their guess, and we analyzed the data.
Please note, the final opening times are heavily skewed in favor of short opening times, as the locks are picked several times at the Toool meetups and only the lowest time counts. A lock may be opened in 15 minutes during the first attempt, but during several meetups the final opening time can be reduced to five seconds. Many of the locks in the competitions are perfectly suitable locks, and us opening a similar lock in five seconds, shouldn’t be the reason to replace yours.We found this data isn’t easy to visualize in a single graph, as each lock is unique. We chose to break down the analysis results and report on the five most underestimated locks and the five most overestimated locks.
Cylinder Brand Fastest Lockpicker 1 Lockpicker 2 Lockpicker 3 Lockpicker 4 T1906 Abus E60 66.50 74.00 630.00 5.00 20.00 T1907 GTV 36.43 5.00 940.00 30.00 15.00 T1910 EVVA 39.00 420.00 304.00 60.00 15.00 T1915 Mul-T-Lock Classic 216.04 360.00 312.00 120.00 45.00 T1924 Sargent 27.64 150.00 925.00 5.00 5.00 Underestimated locks from the Toool NL competition 2024 
Cylinder Brand Fastest Lockpicker 1 Lockpicker 2 Lockpicker 3 Lockpicker 4 T1913 DOM iX 5KG 47.41 240.00 985.00 120.00 200.00 T1916 ISEO 8.31 180.00 781.00 60.00 25.00 T1918 ASSA 500 5.00 120.00 610.00 180.00 45.00 T1919 Best SFIC 5.00 240.00 558.00 180.00 20.00 T1926 Medeco Biaxial 5.00 132.00 121.00 600.00 180.00 Overestimated locks from the Toool NL competition 2024 
It is quite interesting that only a few locks were underestimated, while most locks were overestimated. Several of the underestimated locks have a tight keyway, but this in itself is not a guarantee for the lock to be difficult. For example, it’s common for the old Evva to be full of standard pins. The biggest surprice is the Sargent lock, which is much better quality than they are usually given credit for.
On the overestimated side, we have locks which are usually quite secure. The Medeco has good tolerances, and the SFIC rely heavily on their double shearline for security. While the Assa 500 and DOM IX are well-made locks from Europe. However, with the right tools and techniques, they just opened without too much difficulty. (The Medeco was raked several times.)This analysis and report may not have solved the mystery of why some locks are easy, and other locks are difficult, but it was interesting to analyze these nonetheless. We will not take guesses for the 20th Toool competition, but do take a look. https://toool.nl/competitie2025/ We chose to save all the keys of this new competition, which enables us to see if the bitting is what makes the difference after the competition concludes.
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LockCon 2024 Schedule
Tickets to LockCon are still available as of 20th of September. We will close the registration on the 25th of September. Please see ‘LockCon 2024 registration is open!’ for more information. https://blackbag.lockcon.nl/?p=4627
Hi Everyone, we are hoping you are doing well! With this blog, we like to show you this program we have created for LockCon 2024. It’s a great mix of the competition you expect, and loads of new and exciting content.
Thursday is the first day of the event, we will use this day for catching up as well as building up the conference room. The cadence of the rest of the event is talks in the morning, a competition in the afternoon, and an evening program which includes a variety of activities.
For the competitions, we have Friday evening reserved for the Dutch Open in impressioning, on Saturday the Dutch Open in Lockpicking will be held, and on Friday we will start and Sunday we will conclude all the ongoing smaller competitions: Lever lockpicking, Disc detainer picking, Felix’s Breakout and Pic Tac Toe by FoxPick, and safe manipulation. The rules for each competition are published here: https://blackbag.lockcon.nl/?p=4652
The schedule will be available in the conference room on large sheets of paper. The Schedule is not set in stone, where you are allowed to fill the gaps, or take the stage with your own last minute talk. Last year, a panel on RFID was assembled on Sunday to fill one of these gaps. Please discuss large changes with the organisation.
Thursday 17:00 Arrival (Hotel check-in is possible from 15:00) 19:00 – 20:30 Dinner (with prior reservation) 20:30 – 22:00 Conference room build up 22:00 – 01:00 Socializing in the hotel bar Friday 07:30 – 10:00 Breakfast 10:00 – 10:15 LockCon Opening 10:15 – 10:30 Dennis van Zuijlekom – Shoot all the hackers 10:30 – 11:30 Zeefeene – Why Your Unpickable Lock Sucks 12:00 – 12:30 Michael Hübler – 3D printing working keys for TSA008 and (all versions of) TSA006 13:00 – 14:00 Lunch 14:00 – 19:00 Dutch Open Impressioning competition 19:00 – 20:30 Dinner 20:30 – 21:00 Introduction to the evening program & ongoing competitions 21:00 Start of disc detainer & safe manipulation competition by Toool 21:00 Start of lever lockpicking competition by Nigel Tolley 21:00 Start of Pic Tac Toe and Felix’s Escape by FoxPick Saturday 07:30 – 10:00 Breakfast 10:00 – 11:00 Eric Scaillet – Aubin’s trophy Group photo 11:30 – 12:00 Nigel Tolley – Hobbes Anti-Violence 12:00 – 12:30 Thijs Bosschert – Lockpicking in Capture the Flag short break 12:30 – 13:00 Han Fey – Lips Keso 13:00 – 14:00 Lunch 14:00 – 19:00 Dutch Open Lockpicking competition 19:00 – 20:30 Dinner 20:30 – 21:00 Eric Scaillet – Lishi 21:00 – 23:00 Walter Belgers – Pub quiz Sunday 07:30 – 10:00 Breakfast (Check out of your hotel room) 10:00 – 10:30 Denes Szabo – Car lockpicking book 10:30 – 11:00 Prize ceremony 11:00 – 12:00 Disk detainer finals 12:00 – 13:00 Nigel Tolley – Lever picking finals 13:00 – 14:00 Lunch 14:00 – 15:00 Foxpick’s games finals 15:00 – 16:00 Safe manipulation finals 16:00 – 16:30 Closing Ceremony + prize ceremony 18:00 Dinner (with prior reservation) -
LockCon 2024: Dutch Open competition rules
We are excited to announce the competitions hosted at this year’s LockCon. There will be the usual lockpicking and impressioning competitions, as well as a return of the disc detainer picking competition. You can also test your safe manipulation skills, join the lever lockpicking competition by Nigel Tolley, and play multiple games by our friends from Foxpicks.
The smaller competitions will be open from Friday evening till Sunday. Each of these competitions reach their conclusion during the finals on Sunday. This can be either a 1:1 with the best pickers, or a first to open wins where the best are competing all at the same time.
Dutch Open Impressioning & Lockpicking
The two main competitions are impressioning and lockpicking, where each takes a whole afternoon. The main rules are found in the pdf below, but for this year’s event we like to share our competition planning as well.
The Impressioning competition will be a standard competition with a qualification round, and two finals of six people each. We want to reduce the luck factor in the competition. E.g. consistent opens are a better demonstration of skill than a single quick open. For this, we have split the qualifier into two. You will now have to open both Abus C83 locks within two 30 minute attempts. The finals are, as per usual, on Abus C83 as well. The locks and blanks are sponsored by Abus!
The lockpicking competition is a standard competition with a qualifier and a bracket of two and three people. The qualifier has six tables of at most ten people per table. This qualifier is five minutes per lock, and in total you will pick ten locks. The best three from each table continue to the bracket. The bracket is played in nine groups of 2, three group of 3, and a final with the last best three lockpickers. Each round of the bracket is 15 minutes per lock.
Further details are below.
Dutch Open Disc detainer picking
Also this year, we have a disc detainer competition. We have learned from the competition last year, and have updated the rules accordingly. We have chosen some great locks for you to pick. This year we have included the Discombobulator from Opsasec in both in front and rear tensioning models, but you can also use the Sparrows 2-in-1 disc detainer lockpick.
Lever lockpicking
Nigel Tolley hosts this year’s lever lockpicking competition. Try your hand at lever lock picking! Various lever locks from the UK will be attending LockCon, for your bafflement and amusement. Try picking a selection varying from 2 levers, uncurtained without anti-picks, up to 5 lever curtained with anti-picks, with various tools supplied. Nothing too hard, and everyone should get at least one open.
The winner of each round goes through to the final, there will likely be 5 rounds of 5 locks for 5 minutes. The final setting will be communicated so everyone is on the same page.
Timing will be like the cylinder picking, call out “open” when you’ve opened your lock. The locks will be modified to not open fully, so expect the bolt to remain sticking out a little when unlocked – but don’t worry, it’ll be obvious! Have fun. Please remember, ‘it’s about manipulation, not brute force.’
There aren’t many rules, but if you break a tool, you’re out!
Foxpick’s games
Foxpick will host two lockpicking games during LockCon. In Pic Tac Toe, you will play a head-to-head competition in a game of tic-tac-toe, but to move you’ll have to pick the locks. For the second game, Felix’s Breakout, it’s your goal to free Felix the Fox from jail! Both games are very exciting, and we hope you will enjoy them as well.
Foxpick will provide all the tools you need. This helps to keep it an even playing field for everyone. Further details of the game are explained before each player starts.Safe manipulation
To celebrate the skill of safe manipulation, we have included it in this year’s competition list. We are working with S&G 6730, for which we ask you to find the combination. The locks spin true, and read very well, so don’t let this opportunity pass!
