Features: Easily Increase the Life of Drill Bits -- Improve the utilization of drill bits, great drill bits maintain tool to keep bits sharp and ready for use. Solve the troubles you have been buying drill bits, save time and save money. Strong Compatible -- Chromium Corundum Grinding Wheel Drill Bit Sharpener suit for grinding 2-12.5mm(5/56-1/2inches) Iron Drill Bit, not suitable for other high hardness drills. Smart Design -- The angle of grinding wheel can be adjusted, the head of the drill can be twisted, and the drill bit can be ground with more angles. With screw positioning, which can fix the position of the drill bit better when grinding the drill bit. Simple Operation -- Compact and portable drill grinding tool, just connect the drill grinder with your power drill to sharpening the blunt drill bit quickly and effortlessly. Reinforced Material-- Made from high-quality ABS plastic and pink corundum grinding wheel,high hardness, rustproof, solid and durable. Specification: Color: Black + Pink Material: ABS + Corundum Grinding Wheel Joint 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