General description These are high-quality cobalt HSS drill bits designed for drilling through tough materials such as steel, stainless steel, and other metals. They are durable and suitable for professional and DIY use. Technical specifications Diameter: 4.5 mm Total length: 80 mm Working length: 47 mm Material: Cobalt HSS (High-Speed Steel with cobalt alloy) Number of pieces: 10 Point angle: 135° 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 appropriate speed for metal drilling Usage Use for drilling holes in metal, steel, stainless steel, and other hard materials Apply steady pressure and keep the drill perpendicular to the surface Other information Made by Irwin, a reputable brand known for durable tools Irwin HSS Cobalt Drillbits are perfect for drilling stainless steel and other high alloy steels They