Features: 1. Effortlessly drill precise holes. The self-centering drill bits make accurate drilling quick and easy, saving time and effort while creating perfectly centered holes. 2. Achieve accurate, well-centered holes every time. These self-centering drill bits help improve efficiency with consistent, precise results. 3. Create perfectly centered holes with a spring-loaded guide that automatically centers the bit for exact positioning on every use. 4. Set includes 7 drill bits in a range of sizes to handle various applications. The assortment ensures you have the right bit for different tasks, delivering clean and professional results. 5. Durable construction with carbon steel and aircraft-grade aluminum provides strength and long-lasting performance. Ideal for door hinge installation, cabinet assembly, drawer mounting, and similar projects. Notice: Color may vary slightly due to differences in monitor displays and lighting. Slight variations due to manual measurement are acceptable. Specification: Material: Brass + HSS Handle diameter: 1/4 inch (6.35mm) Handle type: Hexagonal Color: Silver tone Hole diameters: - 5/64 inch (approx. 2 mm) – use with 2.2–2.8 mm tapping screw - 7/64 inch (approx. 2.8 mm) – use with 3–3.5 mm tapping screw - 9/64 inch (approx. 3.5 mm) – use with 4–4.5 mm tapping screw - 11/64 inch (approx. 4.5 mm) – use with 5–5.5 mm tapping screw - 13/64 inch (approx. 5.1 mm) – use with 5.6–6.1 mm tapping screw - 1/4 inch (approx. 6.3 mm) – use with 6.8–7.3 mm tapping screw - 5 mm (approx. 5 mm) – use with 5.5–6 mm tapping screw Package includes: 1 set (7 pcs) x Self-Centering Drill Bits