Cobalt drill bits are mainly made of M35 high-speed steel, which is strong, has a long service life, and also contains 5% cobalt for increased wear resistance and durability. The double ended cobalt drill features a 135-degree split point design, which saves time and effort for fast and accurate drilling, no center punch is required, and the cutting edge is finely ground to meet different cutting precision. Double-head design brings double durability, easy to match with other electric drills, such as bench drill, hand drill, impact drill, etc. (not included) It is very suitable for drilling through hard metals such as stainless steel, steel, iron, metal plate and aluminum alloy, plastic, resin plate, wood and other softer materials.
