1. The lawn mower blade sharpener is compatible with various power drills and hand drills. It is convenient to use and efficient. Designed to be mounted in any 1/4" drill. 2. The mower sharpener features a balanced rotary design, allowing for quick and easy sharpening of cutting edges, saving time and effort. It is simple to operate and highly efficient. 3. The sharpener is constructed from high-quality grinding stone, ensuring durability and delivering a clean, sharp edge on lawn mower blades. 4. Balancing blades during sharpening helps reduce engine and spindle bearing wear. 5. Works on most mowers without requiring blade removal. 6. Drill-mountable blade sharpener grinds at the correct angle. 7. This tool is effective for sharpening lawn mower blades, drill bits, sickle bar cutters, rotary tillers, hoes, and similar edged tools, restoring their cutting performance. Specifications: Material: Corundum Model: 4 Layer, 2 Layer Size: As shown in image Diameter: 55mm / 2.1" Shank Diameter: 6.35mm / 1/4" Package Included: 1 x Lawn Mower Blade Sharpener