Built for a job: made from oxidation aluminum for a strong, durable sharpener that lasts. The unit is designed for repeated use and can be used many times. Doublelayer whetstone: the doublelayer design prevents the base from overheating. The doublelayer whetstone provides more accurate and faster multiangle grinding, saving time and effort and increasing safety. A sharp edge is needed to help maintain a healthier and more beautiful lawn. Wide compatibility and applications: widely used for sharpening lawn drill cutters, rototillers, and related tools. This sharpener can be used with power drills and hand drills to sharpen dull blades, quickly restoring sharpness and improving productivity. Easy attachment and edge renewal: the sharpener can simply attach to power drills to sharpen easily and quickly, making edges more effective. Renew your blades in minutes with any power drill or hand drill. Use scenarios In the garden or on a lawn care job, attach to a power drill to sharpen lawn drill cutters and rototillers before use to maintain cutting efficiency. In a workshop, use with a power drill or hand drill to sharpen dull drill bits and other blades, quickly restoring performance. On a job site, attach to any power drill for fast, inminute edge renewal to keep equipment productive.