General description The Nitriding Cutter Spiral Step Drill Bit is designed for efficient hole cutting and enlarging in various materials. Made from high-speed steel and nitrogen coated, this drill bit reduces friction and operates cooler, making it ideal for a range of applications. Technical specifications Material: HSS4241 High Speed Steel Surface treatment: Nitrogen coating for increased hardness and abrasion resistance Dimensions: 45 x 100 mm Weight: 350 g Hole sizes: 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm Compatibility and accessories Suitable for materials with hardness less than 25 mm, including carbon steel, sheet metal, insulation boards, PVC panels, planks, and wood with a thickness of less than 5 mm Usage Spiral cutting flute for automatic deburring of holes during drilling