Draper - Step Drill Bit 4-20mm (71220)

General description This step drill bit is designed for versatile drilling into various materials including steel, brass, copper, aluminium, wood, and plastics. It features a tapered design with multiple steps, allowing for precise hole sizes without changing bits. The drill bit is made from high-speed steel, ensuring durability and a longer lifespan. It is marked with graduations at 2mm intervals, ranging from 4mm to 20mm, for accurate drilling. Technical specifications Material: High-speed steel (HSS) Diameter range: 4mm to 20mm Step increments: 2mm Number of steps: 9 (4, 6, 8, 10, 12, 14, 16, 18, 20mm) Application: Steel, brass, copper, aluminium, wood, plastics Compatibility and accessories Compatible with standard drill chucks Suitable for use with electric drills and drill presses Installation Insert the drill bit into the drill chuck and tighten securely Ensure the drill is set to the appropriate speed for the material being drilled Usage Mark the desired hole position on the