post with improved functional fixation

摘要

A post with improved functional fixation is divided into two parts - the hook part and functional part, part of the cavity with the possibility to contain filling material. The pin length is , and the length is fixed and the functional form of each, fixing part has "v" - shaped structure with the top to the middle pin with a wedge-shaped profile, and functional part of the extension is in the form of triangle with vertex middle pin with wedge-shaped profile.