http://www.gadgettown.com/4-Digits-Password-Combination-Bicycle-Lock-800mm-Length-12mm-Dia-B10252.html
This Bike Bicycle Lock 4-digit Combination Lock 800mm Length 12mm Dia has four passwords combination, no keys. It is not easy to break, portable and safe. The padlock is suitable for lock bicycle and other places, it is easy to use, free to change password, allows personalized combination.
