HSS Step Drill Bits 10-45mm Spiral Flute, Triangle Handle Nitrile Pagoda Shank Drill Bit with Black Steel Bit

High-speed steel: Suitable for workpieces less than 25 mm in hardness, such as carbon steel, sheet metal, insulation boards, PVC panels, planks, and wood less than 5 mm thick. Made of heat-treated, forged high-speed steel (HSS) with a titanium nitride coating for extended service life. Good design – The triangular shank fits securely in the chuck of power tools and eliminates slippage. The dual-flute design removes chips faster and allows particles to escape easily. You can use water to cool it while it's running, extending its lifespan. A must-have for families, DIY enthusiasts, or professionals – perfect for home repairs and light-duty tasks such as drilling holes in plastic, aluminum, copper, and many other types of sheet metal. Set of 10-45mm Nitride Step Drill Bits with High-Speed ​​Steel Hex Shank for Carbon Steel, Sheet Metal, Insulation Boards, PVC Boards, and Planks Features: 1. High-speed steel for longer life. 2. Triangular shank prevents slippage in the chuck. 3. Double-flute design for faster, smoother cutting. 4. Advanced double-spiral flute design surpasses straight flute design and extends bit life. The split tip increases speed and also includes laser-etched step measurements for improved visibility. 5. The sharp edge ensures easy cutting through most sheet metal, plastic, and other materials. Features: Material: High-speed steel. Size: 10–45 mm (8 increments: 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm). Contents: 1 drill bit.