1) The interior is pressed into shape with zinc, and the exterior is of plastic 2) The lock body: height: 35mm, diameter: 20mm 3) The lock perch is of iron plated with chrome and the length is 83mm, diameter is 9.5mm, head diameter is 20mm. 4) ABS plastic body on locking case 5) After locked, its length is totally 85mm 6) Firm, easy to seal and credible burglar-precaution 7) Print company name or brand, sequential number with laser and Thermal painted. 8) Tensile strength>1,500kgs 9) Standard colors: red / yellow / green / blue / white 10) Use coverage: all-style containers, container trucks, oil trucks, banking case, ammeter case, bullet case, etc.