This bike lock is for protecting your bike. Easy to set reset. Heavy duty tough square-linked, hardened steel chain for strong cutting and sawing resistance. It can provides additional protection and helps prevent stealing. Features - Color: As shown. - Material: Iron. - Size: Approx. 60 x 2.5 x 2 cm. - Heavy duty tough square-linked, hardened steel chain for strong cutting and sawing resistance. - It can provides additional protection and helps prevent stolening. - for lock, motorcycle lock, combination lock, cable lock, chain lock, skateboards, sports equipment. - It's an easy locking mechanism while inserting the locking bolt, the anti-rust and copper key core to prevent the bike from stealing. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand