- Sizes Included : 6.3mm, 8.3mm, 10.4mm, 12.4mm, 16.5mm, 20.5mm - High-Quality Material : Crafted from premium materials, the countersink drill bits feature exceptional hardness for superior performance. They provide a sharp edge that lasts longer, making them ideal for various materials including thin metal, wood, fiberboard, plastic, carbon steel, iron, and aluminum. - Efficient Cutting and Burr Removal : The countersink design ensures smooth cutting edges that effectively remove burrs. This enhances the finish of your projects, giving them a clean and professional look. - Durability and Wear Resistance : These drill bits are built to withstand heavy use, featuring a high bevel circlip for stability and fine chamfering for precise results. - Broad Compatibility : The standard sizes fit a wide range of common drills and drilling machines, including vertical drilling machines, ensuring versatility for all your projects. - Practical Applications : Suitable for woodworking, metalworking, and DIY projects, these bits excel in creating clean countersinks for screws in furniture assembly or producing precise holes in sheet metal. Use them in home renovations or craft projects for reliable performance and optimal results. - Experience enhanced efficiency and quality in your drilling tasks with this essential countersink drill set.