[Applicable Type] The drill bit sharpener is mainly used for grinding iron drills, not suitable for other high hardness drills.Give your old blunt drill bits a second life and improve the utilization of drill bits [Package includes]2pcs Drill Bit Sharpener,6 pcs Brown Corundum Grinding Wheel,2pcs Wrench,reducing the need for frequent replacements and saving you both time and money [Application scope] The grinder drill bit set sharpener adopts corundum grinding wheel, suitable for grinding 2~12.5mm iron drill bits, using 1/4 inch standard hexagonal shank, can be used with electric drills to keep the bits and ready to use [Sturdy and ]Made of high-quality ABS plastic and brown corundum grinding wheel, High hardness, rustproof, solid and , keep bits and ready for use. [Easy to carry]Compact and portable drill grinding tool,Portable tools that you can carry around and don't take up space in your backpack, Weight: 0.63382900325 pounds, Manufacturer: Ehwisbe