Bike Chain Lock 3 Ft. 4 Ft. Heavy Duty Anti-Theft Bicycle Chain Lock 8Mm 0 Point STURDY DURABLE: The bike lock is made of 8mm/0.32inch heat treatment hardening high manganese steel square link which is resistant to cutting, breaking, and shearing. The heavy duty bicycle chain lock is perfect for protecting your bicycle, motorcycle, and other valuables things. NO BLOCKING: The lock cylinder of this bike chain lock is made by zinc alloy blade, which has a precise structure to prevent technical opening. With the lock dust cover and cooper lock cylinder, no need to worry about blocking when opening the heavy duty bike lock. HUMANISED DESIGN: This bike chain lock comes with 3 keys, so you'll always have a spare one. It will offer you some peace of mind in case you lose one. The bicycle chain lock comes with a flexible protective cloth sleeve which can protect the bike from scratch. PORTABLE SIZE: The total length of this chain bike lock is 35.5inch and the weight of which is 2.87lb. You can just wrap the heavy duty bike lock on your bike frame or just put it into your backpack to enjoy your beautiful day like never before! WIDE APPLICATION: This bicycle lock has a wide application which is ideal for bicycle, motorcycle, gates, fences and more. Just use it to freely protect your valuable objects as long as the length of this bike chain lock is suitable for the objects you protected.