Description:

Complete hole drilling, tapping, deburring and countersinking in one operation with power drill saves labor and time. Back tapered beyond tap to prevent thread damage from over-drilling. Made from hardened high-speed steel 6542 / M2 steel for longer life. Suitable for soft metal tapping, such as aluminum plate, thickness of less than 3--4mm.. Applied to steel, even for 304 stainless steel plate under 2mm.