Kryptonite Kryptolok chain lock This robust chain lock has a patented closure, making it extra secure and very suitable for securing expensive bicycles. The nylon cover is durable and weatherproof and ensures that the frame of your bicycle is not damaged. Specifications: Color: black Chain material: steel Cover material: nylon Length: 95 cm Link thickness: 9 mm Weight: 2.69 kg Contents: 1 Lock 2 Keys