Description:_x000D_1. Well-built, heavy-duty, sturdy, attractive, ergo-friendly, easy-to-handle, perfect little bike lock. Great for bicycles, skateboards, sports equipment, gates and fences, grills and lawnmowers, tools, tool boxes and ladders._x000D_2. The overall length of the chain is about 36 inches, perfect for securing bicycle and compact enough to carry in a bicycle tote bag, and you can wrap it around the seat post._x000D_3. Convenience combination code instead of having to deal with keys, especially if you don't have any pockets. It uses a simple five character password that is very secure._x000D_4. Black nylon cover over the chain is thick and will not rip under normal use. The cloth cover keeps the chain from scratching the bicycle frame or pinching your leg._x000D_5. The chain lock default pass code is 00000. To set a new 5-digit combination, you open the lock then turn the inner dial 14 turn, set a new combination, then turn the inner dial back upright which sets the new combination code._x000D_Specification:_x000D_Name: Anti-theft password chain lock_x000D_Size: chain diameter 5.7cm, circumference: 110cm_x000D_Weight: about 700g_x000D_Color: black and red_x000D_Material: The chain is made of alloy steel, the code lock body is made of alloy lock core, and the code wheel is made of environmentally friendly ABS engineering plastic._x000D_Features: environmentally friendly, strong strength, strong lock, wear-resistant, not easy to agePackage List:_x000D_1 x Bike Lock