- VERSATILE DRILL BIT SET: This high-performance drill bit set features a 10mm/12.7mm shank, making it suitable for a wide range of materials, including 45 gauge steel, 1mm stainless steel, chrome steel, iron, copper, aluminum alloy, plastic, and wood. Available in sizes from 12mm to 35mm, it caters to various drilling requirements. - PRECISION ENGINEERED DESIGN: The drill bits incorporate a 118° double relief angle for faster drilling speed and enhanced accuracy. The optimized cutting edge ensures clean holes while minimizing effort and fatigue during prolonged use. - EFFICIENT CHIP REMOVAL: With an advanced flute design, these bits facilitate quick and effective chip evacuation, preventing clogging and overheating. This feature not only enhances drilling performance but also prolongs the lifespan of the drill bits, ensuring smooth operation. - SECURE GRIP HANDLE: The specially designed handle guarantees stable clamping and fastening throughout the drilling process. Bits measuring 12-21.5mm have a 10mm shank diameter, while larger sizes are equipped with a robust 12.7mm (1/2 inch) shank, ensuring compatibility with standard power drills. Use Cases: 1. Perfect for metalworking projects, effortlessly drilling through tough materials like stainless steel and chrome steel. 2. Ideal for woodworking applications, providing clean holes in various types of wood with minimal effort. 3. Excellent for DIY enthusiasts and professionals alike, allowing for versatile drilling in home improvement and repair tasks. This drill bit set combines functionality, compatibility, and performance, making it an essential addition to any toolkit.