The newest Multi Sharp tool is the Rotary Mower and Large Tool Sharpener. A blunt blade on your mower leaves a ragged cut and a sharp blade leaves grass with a clean, smooth cut. The grass is cut and not just crushed to the ground, only to pop up right after the mower goes over it. The specially angled wheel quickly puts back the edge on spades, hoes, lawn edgers and axes making them easier to use. Fits any power drill, with no need to remove mower blade. High quality aluminum oxide produces sharp new cutting edges to the correct angle in minutes.