- This three-edge chamfer drill bit set includes sizes 6.3mm, 8.3mm, 10.4mm, 12.4mm, 16.5mm, and 20.5mm, providing flexibility for various drilling applications. - Crafted from high-speed steel (HSS), these bits offer exceptional hardness and durability, ensuring efficient and precise drilling for both DIY enthusiasts and professionals. - The countersink drill bit cutter is engineered to create smooth and accurate countersinks, which enhances the quality and finish of your drilled holes. - Designed for easy use, this hand power tool part is suitable for a range of projects, from woodworking to metalworking. - The set includes one piece with a 16.5mm size, a practical option for those requiring this specific dimension. Use scenarios: - Ideal for creating clean countersinks in cabinetry or furniture projects, ensuring flush fittings for screws and fasteners. - Perfect for metalworking tasks where precision is crucial, allowing for smooth holes without burrs or rough edges. - Great for DIY home improvement projects, such as installing hardware or fixtures, where a professional finish is desired.