Kryptonite Evolution Chain Lock This robust chain lock has links with a thickness of 10 mm and weighs 2.77 kg. The chain is directly connected to the locking cylinder, which ensures that there are fewer weak points for thieves. The locking cylinder is also protected against drilling or cracking. The nylon cover is durable and weatherproof and ensures that the frame of your bicycle 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: 90 cm Link thickness: 10 mm Weight: 2.77 kg Warranty: lifetime Contents: 1 Lock 3 Keys