High-Performance M35 Cobalt Twist Drill Bit Set for Steel

High-Performance M35 Cobalt Twist Drill Bit Set for Steel. M35 Cobalt Material: High-speed steel with 5% cobalt for superior heat resistance and durability. Wide Size Range: Available in diameters from 1mm to 20mm with precise overall lengths. Multiple Surface Finishes: Options include Black Oxide, Tin-coated, Bright, Rainbow, and Sandblast. Customizable Shank: Shank available in Round or Hex configurations based on customer requirements. ISO9001 Certified: Factory certified to ISO9001, CE, RoHS, BSCI, and ICS standards. 18 Years Experience: 18 years of precision manufacturing expertise in metal and wood drill bits. Full Customization: Supports full customization, minor customization, and design-based options. 100% Quality Inspection: Every finished product undergoes rigorous visual inspection before export.