Billy Goat PL2501SPH Hydro-Drive AeratorThe Billy Goat PL2501SPH Hydro Drive Aerator offers an estimated 30+ percent improvement over traditional drum aerators, along with intuitive fingertip hydro drive controls and a proprietary EZ Drop tine system for optimal aeration. Try it for superior aeration results and remarkable low maintenance. Features: Billy Goat Controls, the Common Experience Our best in class controls package provides standardized variable speed intuitive hydro drive