The password wheel of this chain lock is made of ABS engineering plastic, environmentally friendly and sturdy.This is a heavy duty chain lock, which is equipped with strong locking head.It is easy to store and carry with the flexible spiral design, you can place the chain lock directly on the bicycle frame.Item Name: Chain LockMaterial: Alloy Steel, ABS Engineering PlasticFeatures: Easy to Install, 5 Digit, Bicycle AccessoriesSize Details:0.6m: Length: 0.6m/23.62", Diameter: 5.7cm/2.24" (Approx.)0.9m: Length: 0.9m/35.43", Diameter: 5.7cm/2.24" (Approx.)1.2m: Length: 1.2m/47.24", Diameter: 5.7cm/2.24" (Approx.)1.5m: Length: 1.5m/59.06", Diameter: 5.7cm/2.24" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Chain Lock