SincereetaliFeatures: Easily Increase Drill Bit Life - Improve drill bit utilization, large drill bits hold the tool to keep drill bits sharp and ready to use. Solve the trouble you have purchased drill bits, save time and money. Strong Compatibility - Chrome corundum grinding wheel drill bit sharpener suit for grinding 2-12.5mm (5/56-1/2 inch) iron drill bit, not suitable for other high hardness drill bits. Clever Design - The angle of the grinding wheel can be adjusted, the drill head can be twisted, and the drill bit can be ground with more angles. With screw positioning, which can r fix the position of the drill bit when grinding the drill bit. Simple Operation - Compact and portable drill bit grinding tool, just connect the drill bit grinder with your electric drill to sharpen the blunt drill bit quickly and effortlessly. Reinforced Material - Made of high quality ABS plastic and pink corundum grinding wheel, high hardness, anti-rust, solid and durable. Specification: Color: Black + Pink Material: ABS Grinding Wheel + Corundum Common Size: 6.35mm Grinding Size: 5/64in - 13/64in (2mm-5mm), 7/32in - 21/64in (5mm-8mm), 11/32in -1/2in (8mm-12.5mm) Item Size: 200 * 80 * 32mm / 7.9 * 3.1 * 1.3in Item Weight: 110g / 3.9oz Packing List: 1 * Drill Bit Sharpener 1 * Wrench