kryptonite

* 10mm six-sided chain links made of 3t manganese steel* High security disc-style cylinder is pick and drill resistant​​

* 7mm four-sided chain links made of 3T manganese steel* End link design secures the chain with the hardened deadbolt* High security disc-style cyl...

Kryptonite Keeper series chain locks offer moderate security appropriate for quick stops in metropolitan areas or a few hours out in less populated...

* 3mm hardened steel links for moderate security lock ups* Compact and easy to transfport with included bracket* 2 keys included, with Key Safe Pro...

This lock features a hardened steel shackle that resists hand tools for security in low crime areas.​​

* Easy-click locking, no need for keys when locking* 2 reversible keys, can be inserted either way* Included bracket to easily carry on a bike (-01...

* 9mm four-sided chain links made of 3t manganese steel* High security disc-style cylinder is pick and drill resistant​​

* 4-sided 3T Manganese steel links* 9.5mm chain link thickness* 5 digit resettable combination with over 100,000 possible codes* Combo Safe Program...

The KryptoLok features a high security pick and drill resistant disc-style cylinder.​​

* Hook-n-Loop fasteners to hold the nylon cover in place* 12mm six-sided chain links made of 3T manganese steel* 14mm hardened MAX-Performance stee...

This lock is the highest security Kryptonite U-lock available, featuring a 16mm hardened MAX-Performance steel shackle with double deadbolt design.

* Hook-n-Loop fasteners to hold the nylon cover in place* 14mm hardened MAX-Performance steel shackle* 12mm six sided chain links made of 3T mangan...

Kryptonite New York Diamond Standard Lock Bicycle U-LocksThis bicycle u-locks from Kryptonite is designed for riders and mechanics seeking reliable...

* Hook-n-Loop fasteners to hold the nylon cover in place* 14mm six-sided chain links made of 3T manganese steel* 15mm hardened MAX-Performance stee...

This lock is the highest security Kryptonite U-lock available, featuring a 16mm hardened MAX-Performance steel shackle with double deadbolt design.​​

* PLUG-IN CHAIN to be used with either retractable or non-retractable ring lock* Ring lock and plug-in chain PREVENTS ROLL, RIDE, AND LIFT away the...