sharpening tool, easy and convenient to use. Good sharpening effect, which saves a lot of effort. Grinding wheel made of high quality ABS plastic and brown corundum, abrasion resistant, rustproof, waterproof and dustproof. Material: Made of high quality ABS plastic and corundum grinding wheel brown, the iron drill bit can grind very well, it is durable and not easy to damage. With its simple structure and excellent material, the milling cutter has a good sharpening effect and can save a lot of effort. Use this drill bit sharpener with your drill bit to keep it sharp and ready for use, safe and convenient. Lightweight and portable, available for 2-12.5mm drill bits. This diamond drill bit sharpening tool is mainly used for grinding iron drill bits. Other high hardness drill bits are not suitable.