Description:

-The chamfering with a groove, easier to discharge debris and the High Speed Steel Drill Bit not easy to blunt. -Idea for cutting through plastic, aluminum, copper, stainless steel, aluminum plate, insulation boards, and PVC sheet, ect.. -High hardness, smooth chip processing, can fulfill the chamfering, deburring, and cone processing.. -Used for workpiece circular aperture chamfering or cone hole. -Made of high material, high hardness, rustproof, solid and durable.