Faithfull Hsse M35 Cobalt Quick-change Impact Drill Bits is a drill bit sets designed for practical everyday use. Key product details include Faithfull Cobalt Quick-Change Impact Drill Bits feature a revolutionary tip design that is far superior to any other drill bit in the industry; Its protruding centre tip acts like a pilot drill, enabling super-accurate positioning and stops the drill from wandering; Produced in accordance to DIN 338 and DIN 3126-E6.3, for high precision tolerances and geometric accuracy. Additional features include These innovative drill bits have 7 cutting edges and 3 peaks that offer several distinct competitive advantages: - Super-accurate self-centring - you can make a hole in a round-pipe with one hand.- Speed - twice as fast as split point drill bits.- Tool lifetime - up to 10 times longer life in mild steel; Ideal for heavy-duty industrial work in alloy steels, carbon steels, cast iron, hardened alloy steels, stainless steels, high-temperature alloys, titanium alloy, high strength steel and carbon fibre composite materials. Further specifications include Manufactured from M35 HSSE grade steel with a 5% cobalt content for increased heat resistance; The cutting performance is fantastic, both on precision and degree of finish, leaving much less defects (burr) than other drill bits; These bits are impact rated and have a 1/4in quick-change shank for use in impact drivers.