Resharpens rotary mower blades to the correct angle in minutes.|Sharp blades give a clean cut and are healthier for the grass.|No need to remove blade from the mower.|Reversible, Corundum grinding wheel gives 10 blade re-sharpenings lasts for 3 to 4 seasons.|Also re-edges and resharpens hoes, lawn-edgers, spades, axes, making them easier and safer to use.|Fits any power drill.