The PL2501represents the best combination of productivity, operator comfort, superior aeration results, variable hole density with remarkably low maintenance in its class. This unit offers an estimated 30+ percent greater return vs.traditional drum aerators. Best in class controls offer same intuitive, variable speed fingertip hydro-drive innovation. Patent pending EZ Drop™ tine system has a one-step tine engagement lever from the handle that permits the operator to pass over obstacles in the aeration path for uninterrupted aeration.