How to use Use an electric drill with a chuck to drive the drill bit sharpener. The product is easy to use, very practical and very suitable for quick drilling. High quality materials QualityThe drill bit is made of high quality ABS plastic and brown corundum grinding wheel, high hardness, anti-rust, wear-resistant, strong and durable. sharpen the drill bit and improve its working performance. AdaptationThe drill bit sharpener carries a wear-resistant corundum grinding wheel, which is mainly used for grinding iron drill bits. Other high hardness drill bits may be exempt. Convenient and efficient Use this sharpener with your drill to keep the drill sharp, improve the utilization of the drill, and save energy and cost. money. The drill bit sharpener has good sharpening effect and saves a lot of effort. Easy to carry The portable drill bit sharpening tool is lightweight, compact in size and easy to carry.