Features High Positioning Accuracy: Achieve precise drilling without movement, ensuring clean hinge installations with automatic chip discharge for hassle-free operation Durable Aluminum Alloy Construction: Crafted from robust aluminum alloy, this hinge drill bit guarantees long-lasting performance and reliability for all your woodworking needs User-Friendly Design: Simple structure makes it easy to operate and install, allowing you to tackle projects quickly with the included various drill bit specifications Versatile Application: Ideal for woodworking projects, this tool is perfect for installing door and window hinges, streamlining your workflow with effective chip removal Hex Handle for Enhanced Grip: Features a hex handle with an incisive bit, providing superior control and extending the life of your hardware tools for consistent results Features: 1、The main body of this hole saw is made of cemented carbide, which effectively extends the service life. 2、Can make holes in steel plates, iron plates, stainl steel plates, aluminum plates, calcium silicate plates, plastic plates, resin plates, and FRP plates. 3、This cutting edge is incisive, the opening is neat and glossy without broken edges, and the cutting resistance is small. 4、Thefront and rear inclination angle tooth shape design, low resistance and strong perforation ability. 5、This hole saw can be compatible with a variety of materials and work more efficiently. Specification: Item Type: Carbide Hole Saw Material: Carbide Purpose: To make holes in steel plate, iron plate, stainl steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP plate Plate Cutting Thickn: Approx. m / 0.1in Total Length: Approx. 88mm / 3.5in Inner Wall Thickn: Approx. 20mm / 0.8in Shank Diameter: Approx. 9.8mm / 0.4in Hole Diameter Specification: Approx. 50mm / 2in 51mm / 2.01in 5m / 2.1in 55mm / 2.2in 60mm / 2.4in 65mm / 2.6in 70mm / 2.8in 75mm / 3in 80mm / 3.1in 85mm / 3.3in 90mm / 3.5in 95mm / 3.7in 100mm / 3.9in Package List: 1 x Hole Saw 1 x Spring 1 x Hex Wrench Note: Not suitable for electric drills and impact drills, as well as materials such as tiles, concrete, wall, and stones. Package List 1 x Hole Saw 1 x Spring 1 x Hex Wrench