Giaone High Precise M35 Twists Drill Bit Set for Metalworking and DIY Project

With its M35 cobalt speed steel construction, the professional twists drill set is perfect for drilling through stainless steel and other metals. Precise grinding process with smooth surfaces and high grinding accuracy; 135° SPLIT Point drill bit, sharp and durable cut edge, stable feed; Suitable for hand electric drill, electric drill, drilling machine, machining center, milling machine; Note: It can not use on tiles, concrete, wall, stones, etc;