Service: Your satisfaction is our priority; not satisfy with our product and also have any question, please to our Highly Security Bicycles: The bike is make of twist 11mm thick zincs alloys cable The cable is protect by PVC cover, its security cylinder is make of highly strength zincs alloys Widely Applications: Great for bicycles, motorbike, electric vehicles, and also great for fence, gate, sports equipments and also other valuables against theft Bike with Code: 5digits combination, its easy to set and resets your own number combination, 100000 possible combination, so its almost impossible for pilferer to guesses your number Easy to Use: This 5digits individual code can easily be set The factory setting is 00000 Follow the instructions to change the required combination