DescriptionAdopts polishing craftwork, greatly improves the deburring bit's corrosion resistance and oxidation resistance, enhances its wear resistance, high temperature resistance, cutting property. High hardness, smooth chip processing, can once fulfill the chamfering, deburring, and cone processing. It is a professional chamfering tool for batch processing, used for chamfering round holes and edges.Feature- Color: As shown - Material: steel - Size: 6 x 2 x 2cm - Made of cobalt steel material, high hardness, rustproof, solid and durable - This bits should use the bench drill , it is easy to shake and it will affect the chamfering effect if you use the hand drill. - High hardness, smooth chip processing, can fulfill the chamfering, deburring, and cone processing. - Used for workpiece circular aperture chamfering or cone hole - Idea for cutting through plastic, aluminum, copper, stainless steel, aluminum plate, insulation boards, and PVC sheet, ect.