Carbide Spot Drill Stub Center Point Bit 60 90 120 Degree 1-12mm Chamfer Pilot

Carbide Spot Drill Stub Center Point Bit 60 90 120 Degree 1-12mm Chamfer Location Prepare Guide Pilot Hole Machine Tools. HRC55 Fixed-Point Chamfer Milling Cutter. (2) Material:Carbide Tungsten. (3) Coating: AitTiN Coating. (4) Valve stem diameter: 4mm, 5mm, 6mm, 8mm, 10mm, 12mm. (5) Best applicable materials. Uncoated:aluminum and aluminum alloys, copper alloys, acrylic, plastics and other soft materials. AiTiN:garbon steel/salloy steels/tool steels/alloy steels/pre-hardenedsteel.