The lock body is of ABS plastic. It can be consecutively hot printed with six digit numbers and logo designs, also can use laser technology to print logo. There are a spring, a card and a small nail in the inner case. There is 4mm diameter U shape hasp, which is double side locked. The U shape lock rod is made of steel zinc-plated and passivated. Lock body is supplied in red, blue, yellow and any selection of other colors. F2000N breaking strength.