This hardened steel shackle and deadbolt from Kryptonite provides extra security for your bike and helmet. Just thread it through the PopLock on your Thousand helmet and lock with one of the two included keys to keep it secure while you explore your city.
12mm hardened steel shackle
New hardened deadbolt anti-rotation design.
Includes 2 stainless steel keys, with ergonomic design to reduce the amount of torque, and keep them from bending or breaking.