Top Quality: This Lawnmower Blade Sharpener is made of high quality corundum, ensuring its durable and longevity; Size: 50 x 47 mm/ 1.97 x 1.85 inch (DL)???fit for most of power drills??? designed with prefect spinning balance??? practical and convenient Perfect for Power Drill & Hand Drill: Perfect for sharpening lawn blade, drill blade, mower, Axes, Spades??? Hatchets??? Hoes??? Edgers???Ice Skates and so on, make the edge become more effective; Easy to use: Both power drill and hand drill can use it, configured to shapren any tool edge to a 25 degree cutting edge, then you can sharpen the blade easily and quickly, less time and less wait.