Hex Shaft Step Drill, Twist Drill M35 Cobalt High Speed Steel, Titanium Nitride Coated

0.25 inch (6.35 mm) Hex Shaft: The step drill uses a 0.25 inch (6.35 mm) hexagonal shaft, providing a firm grip and effectively preventing slipping. 4-20mm (9 levels): 4-6-8-10-12-14-16-18-20mm 4-12mm (9 levels): 4-5-6-7-8-9-10-11-12mm 【High Quality M35 Material】: Made of M35 cobalt alloy with excellent hardness and abrasion resistance. M35 alloy material ensures the durability and performance stability of the drill bit Titanium Aluminum Nitride : Uses a titanium aluminum nitride with excellent abrasion resistance and corrosion resistance, improving the durability of step drills. This special reduces friction and maintains consistent cutting performance while extending the life of the drill bit Double-edged design: The step drill uses a double-edged design to improve cutting efficiency and increase the flexibility of the step drill. 75° spiral edge and 118° X-shaped drill bit prevent slipping, drill faster and provide precise cutting Compatible with a variety of materials: This step drill is designed to work with a variety of materials, including wood, metal, and plastic. Suitable for high hardness materials, such as aluminum plates, steel plates, stainless steel plates, carbon steel, stainless steel plates that are less than 0.04 inch (1 mm) thick, iron plates and aluminum plates that are less than 3 mm) thick

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