Transmetal bur made of Tungsten Carbide metal, cylinder, 19mm, FG (friction grip). Particularly appropriate for crown & bridge cutting as well as for amalgam or composite removal. Specially designed to cut and perforate crowns & bridges (gold and Ni-Cr or other non precious alloys). Helicoid tooth pattern with extra fine cross-cutting: good debris evacuation, no bur clogging, no overheating. 5pcs package.