Drillpro HRC89 M35 Cobalt 4-12/4-20/4-32mm Step Drill Bit TiAlN Coated Round Shank Step Drill

Description: Drillpro HRC89 M35 Cobalt 4-12/4-20/4-32mm Step Drill Bit TiAlN Coated Round Shank Step Drill Round Shank, Straight Groove. High-speed steel cobalt/M35 More than 4241and 6542 high-speed steel materials. Industrial-grade TiAlN plating 1. Form Al2O3 protection cover, fit for high speed drilling. 2. Can work without coolant. 3. Hardness up to HRC89. 4. Life service 2-3 times longer the common HSS-Co M35 step drill. Uses: Suitable for Aluminum, insulation board, PVC board chamfer,steel, aluminum, sheet metal, carbon steel, 304 stainless steel, etc Specification: Brand: Drillpro Material: HSS-Co M35 Cobalt Coating: AlTiN Coating Hardness: HRC89 Shank: Round Shank Size: Model Shank Diameter Step Height Step Number 4-12mm 6mm 8mm 5 Steps(4,6,8,10,12mm) 4-20mm 8mm 5mm 9 Steps(4,6,8,10,12,14,16,18,20mm) 4-32mm 10mm 5mm 15 Steps(4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm) . Features: 1. Straight groove design(Stably drilling, esay to control) 2. 118 X type bit design(No slipping, drill from any angle) 3. Round shank design(Chamfer design,easy to install) 4. CNC, CBN grinding wheel(Higher accuracy) 5. Hardness up to HRC89, TiAlN coating, a substantial increase in the wear resistance and oxidation resistance (TiAlN coating, made of high-speed steel cobalt/M35 ) 6. 4-12mm(5 Steps) 4-20mm(9 Steps) 4-32mm(15 Steps) for choosing. Package Included: 1 x TiAlN M35 Hss Co Step Drill More Details: