Description Material: High Speed Steel/Cobalt: 8% High Cobalt Application: Copper, iron, aluminum, wood, stainless steel, metal drilling ,Concrete ，Wall Fit for Equipment: Use on electric drills, bench drills, etc. Package Included: 13pcs (1.5mm-6.5mm) Features: high speed steel, 8% high cobalt, more durable and shaper, easy to drill solid material, such as 304 stainless steel. 2. 3 edge cutter head and 135 degree split point design, make drilling easier, easy to chip, no slipping. High heat treated hardness 68-70 HRC. Can be used radial drill, bench drill or hand drill chuck for drilling operations. Related
