M16-19-2.13-T7.2.12-13,5-25 with Lock, zinc and aluminium alloy, and a T7 kind of insert bolt manufactured by Roztocze is an electronic part that consists of a screw designed to be inserted with an M16 thread, 19 millimeters in length, with a monitor diameter of 2.13 millimeters. The T7 kind of insert bolt is 2.12 millimeters our diameter, 13.5 millimeters tightened distance, and 25 millimeter overall. The part is made of a zinc and aluminium alloy, and has a locking mechanism for added security.