Features: 1. Effortlessly drill precise holes. The self-centering drill bits make precise drilling quick and easy. Save time and energy by creating perfectly centered holes with minimal effort. 2. Achieve accurate, well-centered holes every time. These self-centering drill bits help improve efficiency and productivity with consistent, reliable results. 3. Create perfectly centered holes. The self-centering drill bit features a spring-loaded guide that automatically centers the bit for precise positioning on every use. 4. Includes 7 drill bits in versatile sizes. The set includes 5/64, 7/64, 9/64, 11/64, 5mm, 13/64, and 1/4 inch bits, providing the right size for a wide range of applications. Achieve clean, professional results with accurate alignment. 5. Durable and long-lasting construction. Made from carbon steel and aircraft-grade aluminum, these drill bits are built to withstand extended use. Ideal for door hinge installation, cabinet installation, drawer assembly, and other woodworking or metalworking tasks. Notice: - Actual color may vary slightly due to differences in monitor displays and lighting conditions. - Slight measurement deviations may occur due to manual measurement. Specifications: - Material: Brass + HSS - Handle diameter: 1/4 inch (6.35mm) - Handle type: Hexagonal - Color: Silver tone - Hole diameters and recommended tapping screw sizes: - 5/64 inch (approx. 2 mm) – use 2.2–2.8 mm tapping screw - 7/64 inch (approx. 2.8 mm) – use 3–3.5 mm tapping screw - 9/64 inch (approx. 3.5 mm) – use 4–4.5 mm tapping screw - 11/64 inch (approx. 4.5 mm) – use 5–5.5 mm tapping screw - 13/64 inch (approx. 5.1 mm) – use 5.6–6.1 mm tapping screw - 1/4 inch (approx. 6.3 mm) – use 6.8–7.3 mm tapping screw - 5 mm (approx. 5 mm) – use 5.5–6 mm tapping screw Includes: 1 set (7 pieces) x Self-Centering Drill Bits