Ergonomic handle with critical dimensions and angles, reduces user fatigue M14 threaded connector, which is st andard equipment All heavy cycle metal gear 5 electronic speed control knobs (1 300 rpm, 2 450 rpm, 3 550 rpm, 4 650 rpm, 5 725 rpm) Single speed mechanical gearbox with electronic variable speed (00 -725 rpm), with a 5-second updown ramp at all speeds to reduce material spread