The 1/4-inch core hex handle self-centering hinge drill bit is made of high-quality materials suitable for doors and windows, and can also be used for drilling aluminum, copper, stainless steel, and other metal door and window hinges. Ideal for drilling in hinges, hardware, or any application requiring accurate hole placement. The self-centering drill tip is precisely engineered for improved accuracy with reduced eccentricity, ensuring correct and centered hinge installation. Features a flat bottom design. The universal 1/4-inch HEX shank is compatible with a wide range of tools and applications. The self-centering Clic-Change door hinge drill bit set includes 9 VIX bits and 1 HEX key. Bit sizes included: 5/64 inch, 7/64 inch, 7/64 inch, 9/64 inch, 9/64 inch, 11/64 inch, 5 mm, 13/64 inch, and 1/4 inch. A complete, well-organized set for various needs. The brightly colored case is easy to identify and store. The VIX drill bits feature a unique design and precise manufacturing, making them ideal for DIY enthusiasts and professionals, whether for personal use or as a gift. Before first use, ensure the center drill bit is securely tightened. Adjust drilling parameters according to the wood hardness. For softer woods, use smaller bits; for harder woods, select appropriate or larger sizes. Material: Metal Color: Multicolor Package Contents: 9 x Self-Centering Drill Bits (5/64 inch, 7/64 inch, 7/64 inch, 9/64 inch, 9/64 inch, 11/64 inch, 5 mm, 13/64 inch, 1/4 inch) 1 x Wrench Note: Light reflection and display differences may cause slight variations between the product color in images and actual color. Measurement may vary by +/- 1-3 cm.