http://www.gadgettown.com/4-Digits-Password-Combination-Bicycle-Lock-1200mm-Length-8mm-Dia-B10251.html
This Bike Bicycle Lock 4-digit Combination Lock Password Can Not Be Changed 1200mm Length 8mm 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.