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、Selected high？quality diamond particles and reasonable formula can effectively improve the sharpn and wear resistance 2、Straight shank design, suitable for most hand electric drills on the market, with a wide range of applications 3、Suitable for opening holes in granite, marble, all？ceramic tiles and vitrified tiles, etc. 4、The shank diameter is 10mm which is simple to install and the working depth is 58mm 5、Available in four specifications for choice, 22/25/28/30mm, can meet different needs Specification: Item Type: Drill Hole Saw Material: Diamond Drilling Specification: Approx. 22mm / 0.9in 25mm / 1in 28mm / 1.1in 30mm / 1.2in Shank Diameter: Approx. 10mm / 0.4in Working Depth: Approx. 58mm / 2.3in Applicable Equipment: Hand drill, bench drill Package List: 1 x Hole Saw Package List 1 x Hole Saw