The Multi-Sharp® MS1301 Rotary Mower/ Garden Tool Sharpener, re-sharpens rotary mower blades in minutes. Without removing the blade from the mower. The Corundum grinding wheel provides fast sharpening. Wheel is reversible for up to 10 blade resharpenings and lasts for many years. It can also restore the working edge on spades, hoes and lawn edgers. Fits any power drill.