3ft chain lock for bike: With 6mm thick security heavy-duty chain links, our bike chain lock is made of heavy-duty steel known for its cut-resistance. Regular lubrication for the lock hole and keyhole will prolong the lock’s service time.

Protective cloth sleeve & dust cover: The chain of this bike lock is enclosed in protective cloth sleeve that could effectively protect the chain from being rusted and scratches. And the dust cover can protect your keyhole from rain and dust.

Easy to lock: You can just snap it together to get it locked without the keys. Safety tips: Never leave your bike locked outside for long periods of time. Especially in high crime areas. No bike lock is 100% secure.

Secure & portable: Titanker bike chain locks come with 2 keys. You can take one of the keys for daily use while leaving another at home in case you accidentally lose one. Two Keys offer you convenience.

Portable safe size: The overall length of the chain lock is about 3 feet. The links are about 1.97 inches long and about 0.23 inches thick. Lock Weight: 1.4 pounds. Ideal for bicycles, ladders, lawnmowers, stroller, scooter, fences, tool boxes, sport equipment and etc.