Kryptonite mini xtra safety bike lock

thingiverse

A lock's safety hinges on one crucial factor: the time a thief needs to open it. The longer he requires, the more secure the lock will be. I created this device, which covers the keyhole when pulled over it, preventing the thief from picking it in the first place. Prior to attempting to pick the lock, the extra mechanism must be removed. Most seasoned thieves won't carry bulky tools for tasks like these, even though they specialize in picking locks of this kind. The pipe fits snugly over the lock, making it extremely difficult to break or tamper with. Printing with 100% infill is highly recommended.