Kryptonite Evolution Chain Lock This robust chain lock has links with a thickness of 14 mm and weighs 4.99 kg. The chain is connected by a sturdy, robust lock. This lock is resistant to drilling and breaking open. The nylon cover is durable and weatherproof and ensures that the frame of your bike is not damaged. The lock comes with 3 stainless steel keys, one of which has LED lighting. Specifications: Color: black Chain material: steel Cover material: nylon Length: 100 cm Link thickness: 14 mm Weight: 4.99 kg Warranty: lifetime 78.51Contents: 1 Lock 3 Keys