The three wheel design of the Hack Attack Baseball Pitching Machine allows the batter to see the ball clearly all the way through the feeding motion, acceleration, and release - just like a live pitcher. The hitter sees when to stride, and the angle of release. This gives an actual live-arm sense of timing and location. Simply turn the dials to effortlessly throw 100 MPH fastballs and breaking balls at any speed. The three-wheel design changes the breaking pitch plane by simply adjusting the wheel speed dials. The elevation adjustment handle will raise or lower the pitch. With a simple turn, you can even move the pitch up or down within the strike zone between pitches. Weighs 195 lbs.