Enhance your woodworking and metalworking projects with this high-performance Countersink Drill Bit set, crafted from durable high-speed steel for exceptional hardness and long-lasting wear resistance. Designed to deliver fast, efficient drilling and precise countersinking, this set includes five drill bits with blade diameters of 5mm, 6mm, 8mm, 10mm, and 12mm, suitable for a variety of applications in wood, aluminum alloy, and other materials. Key Features: · Fast and Efficient Drilling: The extended tip design ensures quicker operation and cleaner cuts, improving your work efficiency significantly. · Multiple Sizes Included: Five versatile countersink drill bits (5mm, 6mm, 8mm, 10mm, 12mm) allow you to handle different screw sizes and hole diameters with ease. · High-Speed Steel Construction: Forged from premium high-speed steel, these bits offer excellent hardness and durability, providing long service life even under heavy use. · Broad Application Range: Ideal for screw countersinking and hole drilling on wood, aluminum alloy, and similar materials, making it perfect for varied woodworking and metalworking projects. · 1/4 Inch Hex Shank: Designed with a standard 1/4 inch hex shank for quick, secure fitting and compatibility with most electric drills and drivers. Specifications: · Item Type: Countersink Drill Bit · Material: High-Speed Steel · Blade Diameter: 5mm / 0.2in, 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.39in, 12mm / 0.47in · Shank Diameter: 1/4in Hex Shank · Application: Suitable for wood and aluminum alloy screw countersinking and hole drilling. Package Includes: · 5 x Countersink Drill Bits (5mm, 6mm, 8mm, 10mm, 12mm) This comprehensive Countersink Drill Bit set is an essential addition to your toolkit, delivering speed, precision, and durability for professional-quality results in woodworking and light metalworking tasks.