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

High-speed steel: Suitable for workpieces less than 25 mm 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 power tool chucks and eliminates slippage. The double-flute design removes chips faster and allows particles to escape easily.

You can use water to cool it during operation, extending its lifespan.

A must-have for families, DIY enthusiasts, or professionals – Perfect for home repairs and light-duty work such as drilling holes in plastic, aluminum, copper, and many other types of sheet metal.