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、6 pieces countersink drill bits of different sizes from 6mm to 19mm, meeting your various needs. 2、Standard 1/4in hex shank, suitable for many drills, such as hand drills, rechargeable drills, etc. 3、Suitable for hole opening and chamfering of boards with low hardn such as wood and plastic boards. 4、Five-blade grooved design for better chip removal, high-carbon steel drill bit, not easy to be dull. 5、The plated is proof, thus the drill is more beautiful and has high hardn. Specification: Item Type: Countersink Drill Bit Product Material: High Speed Steel Application: Suitable for opening and chamfering of boards with low hardn such as wood and plastic boards. Specification: Approx. 6mm / 0.2in, 8mm / 0.3in, 9mm / 0.4in, 12mm / 0.5in, 16mm / 0.6in, 19mm / 0.7in Shank Type: 1/4in Hex Handle Package List: 6 x Countersink Drill Bit Package List 6 x Countersink Drill Bit