Since 1971, the founder of Kryptonite, Michael Zane, has made the world aware of the fact that locking your bike is really necessary. Nowadays, a good bicycle lock can not be ignored. To this day, the brand continues to design the strongest and most practical bicycle locks so that your bicycle is safely locked. With a lock from Kryptonite the chance is much smaller that your bike will be stolen. At Frank you will find shackle locks, bicycle locks, cable locks and chain locks from Kryptonite.