1、GRINDING TOOL: Twist drill sharpener, mainly used for grinding and polishing iron drill bits, widely used in industrial and woodworking projects. 2、PORTABLE HANDLE: The drill sharpener is a portable design, with ABS handle, with good toughness, wear resistance, convenient and practical. 3、CORUNDUM WHEEL: Equipped with corundum grinding wheel, has high hardness and good grinding effect, time saving and labor saving. 4、STANDARD SHANK: The drill grinder has standard 1/4in shank, which can be installed with an electric drill for use, efficient and stable in operation. 5、MULTIPLE USAGES: The sharpener can be used not only for grinding drill bits, but also for grinding scissors, screwdriver, cutter, has strong practicability. 1 x Drill Bit Sharpener Item Type: Drill Bit SharpenerMaterial: Corundum grinding wheel, ABSFeatures: Mainly used for grinding iron bits, other high hardness bits are not suitable for use, and wear will be largeSpecification: Approx. 2- 12.5mm / 0.1- 0.5inShank Diameter: 6.35mm (1/4in)