General description The HSSØ6-60mm Step Drill Bit is a versatile large twist cone drill bit designed for drilling holes in various materials including metal, wood, aluminum alloys, and plastic. It features a unique design that allows for enlarging holes without the need to replace the drill bit or reposition during use. Technical specifications Diameter range: 6-60mm (includes 6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm) Material: HSS 4241 high-speed steel with titanium coating Recommended drilling speed: 250-400 rpm Usage Suitable for materials such as metal, wood, aluminum alloys, plastic plates, and insulating plates Water cooling is recommended for workpieces with hardness below 25° Other information Includes 1 x Twist Drill Bit Features a three-sided shank to prevent slippage in power tools 135 split point tip and 2 flutes design for faster and smoother cutting Surface depth gauges for precise drilling