- Durable Tungsten Carbide Construction: This drill bit set is crafted from high-quality tungsten carbide, ensuring longevity and reliability for heavy-duty use. You can trust it to stand the test of time. - Adjustable Depth for Versatility: The woodworking hinge hole drilling boring bit features adjustable depth settings, allowing you to easily expand hole sizes from 15mm to 35mm. Achieve precise and accurate drilling tailored to your specific needs. - User-Friendly Design: The cemented carbide woodworking hole saw is straightforward to install and operate. With high cutting accuracy and low noise, you can effortlessly create cup holes in wardrobe doors or desks using the hinge drilling jig. - Wide Range of Applications: This adjustable positioning hinge hole drilling boring bit is suitable for various materials, including solid wood sealing boards, hardwood boards, solid wood products, and plastic plywood. Excellent for home improvement projects and professional woodworking tasks. - Practical Use Scenarios: Perfect for cabinet makers looking to install hinges with precision, DIY enthusiasts creating custom furniture, or anyone needing to make accurate holes in wood or plastic materials. This drill bit set is an essential tool for quality craftsmanship.