Kryptonite KryptoLok Chain

The KryptoLok 912 weighs 7.35 lbs. It is a substantial, heavy-duty lock, so you will definitely feel the weight if you are carrying it in a backpack or messenger bag during your commute.

No, you cannot reset the combination once you have set it and forgotten it. However, Kryptonite offers a 'Combo Safe Program' where you can register your combination with them online, allowing you to retrieve it if you ever lose track of your code.

The 1200 mm (approximately 4 feet) length provides enough versatility to secure your frame and one wheel to most standard bike racks, poles, or parking meters. It is generally long enough for most urban locking scenarios, though it may be tight if you are trying to lock both wheels.

Yes, the chain is constructed from 4-sided 3t manganese steel links, which are specifically designed to resist cutting and leverage attacks. While no lock is completely impenetrable, this material is significantly tougher than standard steel chains and provides a strong deterrent against common theft tools.

No, this model uses a 5-digit resettable combination mechanism, which eliminates the need for keys. This is a great feature if you frequently lose keys or prefer the convenience of not having to carry extra items on your ride.