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、High qualtiy diamond material, sharped blade, wear？resistant and . 2、Oval chip hole designed, more conducive to the discharge of chips, small cutting resistance . 3、Wide application range, applicable to marble, concrete, artificial stone, etc. 4、Simple to install, no complicated tools required, save your time and effort. 5、Ergonomic designs, easy to operate, compact and lightweight, conveneint to use. Specification: Condition: 100% Item Type: Hole Saw Material: Diamond Color: Blue Proc: Sintering Optional Hole Diameter: Approx. 40mm/1.6in, 45mm/1.8in, 50mm/2in Applicable Equipment: Electric Hand Drill , Bench Drill Scope of Application: Core holes for marble, concrete, artificial stone, granite and other materials. Package List: 1 x Hole Saw Package List 1 x Hole Saw