Cobalt Coating Drill, Step Drill Bit M35 High Speed Steel Hex Shank Industrial Drill Bit for Stainless Steel Metal Wood Hole, Drillbits (4-12)

Cobalt Coating Drill, Step Drill Bit M35 High Speed Steel Hex Shank Industrial Drill Bit for Stainless Steel Metal Wood Hole, Drillbits (4-12)

• Cobalt Coating - Cobalt coating reduces friction and operating temperatures and extends its life.
• High Toughness - High wear resistance, high toughness and high strength flexibility.
• Cobalt Coating: The M35 hexagonal shank spiral is made of cobalt coating, which can reduce friction and working temperature and extend its service life.
• Step drill bits are widely used and can be used for perforating various materials, such as stainless steel tapping steel, wood, thin iron, aluminum alloy, -proof board, PVC board, etc.
• Application: Widely used for perforation of 304 stainless steel, wood, thin iron, aluminum alloy, PVC plate and other materials.