This English Garden Universal Rotary Mower & Tool Sharpener reshapes rotary mower blades to the correct angle in minutes. Sharp blades give a clean cut and are healthier for grass. No need to remove blade from the mower. Reversible, aluminum oxide grinding wheel gives around 10 blade sharpening - to last years. Also, re-edges and reshapes hoes, lawn edger's, spades, axes, making them easier & safer to use. Fits any domestic power drill.