With its construction, precisions engineering, and performance, this M42 cobalt twist drill bit set is a must-have for anyone The 5pc M42 cobalt twist drill bit set with a diameter of 2mm is perfect for drilling through steel plates, thanks to its high-speed steel and full-grinding design Whether you ' re working in a metalworking shop, a construction site, or your own garage, this twist drill bit set is an essential tool for drilling holes in steel plates, stainless steel, and other hard materials Designed for professionals and enthusiasts alike, this twist drill bit set is suitable for anyone who needs to drill through steel plates or other toughest materials on a regular basis high-speed steel m42 with cobalt, this twist drill bit set features a unique twisted design that enables it to quickly and smoothly penetrate even the toughest materials, Manufacturer: THOANBY