![[41] Largest U-Locks in the World! ZJ Series U-Locks! @TheLockman28](https://i.ytimg.com/vi/81JcH5wbw_Y/maxresdefault.jpg)
Uploaded May 2015 | Updated September 2026, 3 hours ago
Want to get medieval on Potential thieves!? These ultra massive U-Locks are no joke! When it comes to sheer size and mass, I don't think any other U-Lock can compare to these bad boys!
With a XXXL large 40mm Shackle and weighing 5 pounds for the small and 9 pounds for the large, these Locks are sure to make a potential bike thief's eyes bug out of their head.
These come with 2 extra Long "Inner groove" keys and would definitely require someone to get creative to pick them.
Why Lock your bike to a Bike rack when you can lock your bike "WITH" a bike Rack! =P
E-Bay Store (full collection):
ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
facebook.com/Lockman28
Want to get medieval on Potential thieves!? These ultra massive U-Locks are no joke! When it comes to sheer size and mass, I don't think any other U-Lock can compare to these bad boys!
With a XXXL large 40mm Shackle and weighing 5 pounds for the small and 9 pounds for the large, these Locks are sure to make a potential bike thief's eyes bug out of their head.
These come with 2 extra Long "Inner groove" keys and would definitely require someone to get creative to pick them.
Why Lock your bike to a Bike rack when you can lock your bike "WITH" a bike Rack! =P
E-Bay Store (full collection):
ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
facebook.com/Lockman28
![[41] Largest U-Locks in the World! ZJ Series U-Locks!](https://i.ytimg.com/vi/81JcH5wbw_Y/mqdefault.jpg "[41] Largest U-Locks in the World! ZJ Series U-Locks!
Want to get medieval on Potential thieves!? These ultra massive U-Locks are no joke! When it comes to sheer size and mass, I dont think any other U-Lock can compare to these bad boys!
With a XXXL large 40mm Shackle and weighing 5 pounds for the small and 9 pounds for the large, these Locks are sure to make a potential bike thiefs eyes bug out of their head.
These come with 2 extra Long Inner groove keys and would definitely require someone to get creative to pick them.
Why Lock your bike to a Bike rack when you can lock your bike WITH a bike Rack! =P
E-Bay Store (full collection):
http://www.ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
https://www.facebook.com/Lockman28")
![[53] Chinese Magnetic Power Box Lock (Bypassed/Picked!)](https://i.ytimg.com/vi/8ZNUgsplYk4/mqdefault.jpg "[53] Chinese Magnetic Power Box Lock (Bypassed/Picked!)
Here is an odd little lock from china that is supposedly used to lock up power or utility boxes to help prevent tampering. It uses a magnetic key and has no pins.
I didnt have a strong magnet it try and open the lock, but I did have my trusty screwdriver!
Not a very secure design, but still something new for the collection!
E-Bay Store:
http://www.ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
https://www.facebook.com/Lockman28")
![[9] Forever Lock: Home edition. Awesome Anti-Pick Door Lock!](https://i.ytimg.com/vi/8tdsHBGWu2A/mqdefault.jpg "[9] Forever Lock: Home edition. Awesome Anti-Pick Door Lock!
New Forever Lock V.2 out now!
Complete Security- No Picking, No Bumping, No Foiling!
Official Website: https://theforeverlock.com/collections/v-2/products/v-2-deadbolt-door-lock
Price is $129.99. Worldwide shipping is available for $14.99
E-Bay (Full Collection): http://www.ebay.com/usr/fifth_season
E-mail me directly at:
Lockman@Lockman28.com
INTERNATIONAL SHIPPING to many countries is available!
Check my Facebook Page to stay up to date on details:
https://www.facebook.com/Lockman28
Here I Demo a Forever Lock concept for a Door. I know a lot of you said you thought the design would also work well for doors so I pulled a few strings and got this to show you! I hope you find it interesting!
Please let me know if any of you are interested in purchasing a door lock like this. They are not currently in mass production, but if there is enough demand I could possibly order a custom production run to get them made for you guys.
I also show 2 other door locks I have that I consider to be unpickable, simply because I have never heard of anyone picking them. I would say the chances of a random thief picking these locks if they were on your door is almost zero.")
![[61] THE BOWLEY IS BACK! Unboxing, Key Tests, and Discussion. (Now Available)](https://i.ytimg.com/vi/9W9X5n6jtVE/mqdefault.jpg "[61] THE BOWLEY IS BACK! Unboxing, Key Tests, and Discussion. (Now Available)
NOW AVAILABLE! LINK TO STORE: http://www.bowleylockcompany.com/store/c1/Featured_Products.html
[Time Stamps Below]
1. Is it easy to install? : @3:19
2. Will the key break easily? : @6:15
3. Bowley Key impact testing: @ 9:00
4. ABUS key impact testing: @12:00
5. Comparing Key Damage: @12:59
6. Does the Key snag? @14:12
7. Did you see my idea? @18:11
For more info Visit:
https://www.bowleylockcompany.com/
E-Bay Store:
http://www.ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
https://www.facebook.com/Lockman28")
![[8] The Forever Lock [Operation Only] - Lock Demo.](https://i.ytimg.com/vi/9l1zmVKQPOo/mqdefault.jpg "[8] The Forever Lock [Operation Only] - Lock Demo.
New Forever Lock V.2 out now!
Complete Security- No Picking, No Bumping, No Foiling!
https://theforeverlock.com/
E-Bay: http://www.ebay.com/usr/fifth_season
E-mail me directly at:
Lockman@Lockman28.com
INTERNATIONAL SHIPPING to many countries is available!")
![[30] (Limited Edition) Massive PTK Brass Padlock! (100mm + 5.5 Pounds!)](https://i.ytimg.com/vi/BRZ6QgfjMDU/mqdefault.jpg "[30] (Limited Edition) Massive PTK Brass Padlock! (100mm + 5.5 Pounds!)
I was finally able to get my hands on another one!! This time around I thought I would do a proper video with more detail and commentary about all of its features.
Measurements:
Lock Body:
-100mm Wide x 100mm tall
-180mm Tall including the Shackle.
-35mm Thick (at thickest point)
Shackle:
16mm Thick.
Height inside Shackle (Shackle Clearance): 65mm
Keys:
-105mm Long.
E-Bay Store (full collection):
http://www.ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
https://www.facebook.com/Lockman28")
![[35] Dimple + Tubular Hybrid Lock (Picked!)](https://i.ytimg.com/vi/BxphPw_9GJo/mqdefault.jpg "[35] Dimple + Tubular Hybrid Lock (Picked!)
Here is an interesting example of a hybrid lock incorporating 2 different lock styles. A tubular Lock outside and a Dimple Lock inside.
This lock is pretty old (Early 90s) and has been out of production since then. This particular cylinder had some of the inner dimple pins removed, but I still demo the lock and show how to pick it.
Love the keys for this one!
E-Bay Store (full collection):
http://www.ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
https://www.facebook.com/Lockman28")
![[39] Forever Lock (VS) Liquid nitrogen + Hammer (Viewer Request)](https://i.ytimg.com/vi/CfuPLfsjImU/mqdefault.jpg "[39] Forever Lock (VS) Liquid nitrogen + Hammer (Viewer Request)
Here is a link to an article / test I was trying to replicate:
http://www.popsci.com/diy/article/2012-08/gray-matter-how-science-helps-bike-thieves
New Forever Lock V.2 out now!
Complete Security- No Picking, No Bumping, No Foiling!
E-Bay Store:
http://www.ebay.com/usr/fifth_season
Over the last year I have gotten multiple e-mails requesting if I could test the lock against liquid nitrogen/freeze spray attacks.
Recently I had the opportunity to test out the attack with some help from a local laboratory.
As you can see- the lock can be totally and completely frozen in a pool of liquid nitrogen, take a solid hammer beating and stay locked.
E-mail me directly at:
Lockman@Lockman28.com
E-Bay: http://www.ebay.com/usr/fifth_season")
![[3] 1st Generation Lily Water, Buddhist Swastika Padlock](https://i.ytimg.com/vi/CiZ_dLb3CZ8/mqdefault.jpg "[3] 1st Generation Lily Water, Buddhist Swastika Padlock
This Stainless Steel Padlock has a Buddhist theme and bears some classic symbols of Buddhism. It has a Lily flower engraved on the front and a Buddhist shaped keyway and key!
The keyway shape is ** NOT ** to be confused with the symbol of the Nazi party. If you pay attention you will notice that this symbol is *different*.
Here is a brief explanation from wikipedia:
The word swastika comes from the Sanskrit svastika - su (meaning good or auspicious) combined with asti (meaning it is), along with the diminutive suffix ka.
The swastika literally means it is good.
E-Bay Store (full collection):
http://www.ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
https://www.facebook.com/Lockman28")
![[46] Vintage Dual Custody Padlock [PICKED]](https://i.ytimg.com/vi/E-IFapZ1qbk/mqdefault.jpg "[46] Vintage Dual Custody Padlock [PICKED]
LINK To WADDAC2s Video:
https://www.youtube.com/watch?v=yVP1yG9Y-xA
Here is a really great vintage dual custody lock. Its quite large and heavy duty! It is 80mm wide and weighs 2.4 pounds.
It has 2 cores that use 2 different keys. Both cores must be unlocked for the shackle to come undone, therefore both keys are required.
This lock has been around a long time and seen a lot of action! The inside is a bit dirty, but I was still able to pick it after poking around a bit.
E-Bay Store (full collection):
http://www.ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
https://www.facebook.com/Lockman28")
![[57] 5 Keyway Euro Cylinder (Picked)](https://i.ytimg.com/vi/EyWphriy2KU/mqdefault.jpg "[57] 5 Keyway Euro Cylinder (Picked)
Heres an euro cylinder with an odd design. It has a keyway shaped kind of like a backwards 5. I have only ever come across this one so I dont think many were made.
It has 2 rows of pins total. 1 in the middle and another coming in diagonally from the corner of the keyway nowhere near the bible of the lock.
Was confused at first, but then eventually figured it out!
E-Bay Store:
http://www.ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
https://www.facebook.com/Lockman28")
![[62] Ming Feng Spiral Key Lock!](https://i.ytimg.com/vi/HgJ_Nmjn47I/mqdefault.jpg "[62] Ming Feng Spiral Key Lock!
Here is a lock I have been wanting to share for a long time. Its a Ming Feng Spiral Key lock. Its kind of like a futuristic version of the classic Twiskee Lock.
The Key has moving parts and the bitting of the key rotates back and forth as it enters into the spiral shaped keyway.
Trying to pick this thing is a nightmare as it is really difficult the navigate with a pick and there are 12 pins!
Another very unique and interesting lock out of Asia!
E-Bay Store:
http://www.ebay.com/usr/fifth_season
E-Mail:
Lockman@Lockman28.com
Facebook:
https://www.facebook.com/Lockman28")
