Portable Drill Bit Sharpener Corundum Grinding Wheel for Grinder Polishing Kit Wheel Drill Bit SharpenerMaterial - Made of high-quality ABS plastic and pink corundum grinding wheel,high hardness, rustproof, solid and durable,it can grind iron drill bit very well, and it is durable and not easy to damage.Usage - Improve the utilization of drill bits, solve the troubles you have been buying drill bits, save time and save money.Features - Compact and portable drill grinding tool, Use this drill bit sharpener with your power drill to keep bits sharp and ready for use.Easy to use - The sharpening stone fits inside the Portable 2-12.5mm Drill Bit Sharpener, and need to be used with electric drills, lightweight and portable.Application - This diamond Drill Bit Sharpener is mainly used for grinding iron drills, not suitable for other high hardness drills.