Sturdy & Durable: This bike lock is made of 20mm/0.79inch high-quality alloy steel that is resistant to cutting, leveraging, and dilling. The silicone cover repels dust and dirt, extending the life of your lock. It will increase the safety of your bike. And also, protect your bike from scratches.
Reliable: The locks are made of high-quality aluminum alloy, thickened and enlarged, and very reliable to resisteverage attacks, picking, pulling, and drilling. (Dustproof and waterproof keyhole cover extends service life)
Bigger & More Flexible: The big advantage of chain locks over U-Lock is that they are big and flexible. Chains make it easy to lock your bike to all kinds of anchor points.
illuminative Key: Keys with illumination to assist you in unlocking a door in the dark. You won't need to carry a flashlight to lock up.
Leight: 32.7in (83cm)
Weight: 18.7oz (531g)