- Available in sets of 1, 3, 4, or 7 pieces, these HSS 1/4'' Hex Shank Self Centering Door Lock Hinge Drill Bit Hole Tools come in sizes 5/64, 7/64, 9/64, 11/64, 13/64, and 1/4 Inch (7 PCS), providing versatility for various projects. - Designed as micro drill bits, these tools offer precision drilling for accurate hole placement, essential for installing door lock hinges. - The 1/4'' hex shank design ensures compatibility with most drills, making them easy to handle and fit securely for efficient use. - The self-centering feature enhances accuracy, allowing for consistent and precise drilling without the hassle of misalignment. - Suitable for both professionals and DIY enthusiasts, these drill bits are perfect for tasks such as: 1. Installing new door locks in residential or commercial settings. 2. Replacing or adjusting existing door hinges for improved functionality. 3. Customizing door installations for various hardware types. - Specific details on dimensions and specifications can be found in the second image of the product variant, providing clarity on the tools' capabilities. - Made from high-speed steel (HSS), these drill bits are durable and designed to withstand the rigors of repetitive use, ensuring long-lasting performance.