Numeric code: The factory setting is 00000. Follow the instructions to change the required combination. The 5-digit code offers up to 100,000 possible combinations, which is more secure. And the combination is individually adjustable and maybe changed as many times if you want. Enough length: Thanks to its flexibility and 90cm / 100cm length, the lock chain offers a high degree of comfort and plenty of possibilities for connecting bicycles to fixed objects. The greater the length, the greater the connection to a solid object is easy. Good Security: The bicycle lock uses high strength zinc alloy locking cores, which is smooth and anti-rust and durable. It thus protects your valuables from theft. Extra Protection: Chain lock with a soft fabric sleeve prevents scratching your bike, the full chain plating is rustproof and waterproof. Versatile: Perfect for securing a bicycle, motorcycle, skateboard, sports equipment, gates, fences, ladders, tool boxes, etc. It can easily be rolled up onto the bike frame while in use. Almost impossible to crack. The 5-digit resettable combination lock mechanism allows up to 100,000 possible codes, making the bike lock more secure. Features Locking cylinder: zinc alloy Protective cover: Nylon Chain High quality manganese steel chain Lock materials: Zinc alloy and ABS Combination of factory default code: 00000 A # Weight: about 580 G, Length: 90cm B # Weight: about 640G, Length: 100cm Delivery 1 x bicycle lock with numbers difficult to open The bicycle lock chain can combine more than 100,000 passwords that cannot be easily opened. No matter where you want to go, you don't have to worry about bike theft. High security Anti-theft chain uses high quality design, smooth, anti-rust, durable, environmentally friendly and resistant to severe damage. Non-slip design The padlock is covered with an ABS shell that will not crack at low temperatures and will not deform under high & nbsp; temperatures. WITHOUT KEY