The I-Hack Attack has a unique three-wheel design that allows you to see the ball clearly and fully all the way through the feeding motion, acceleration and release, just like a live pitcher. With this design, the hitter sees when to stride and the angle of release, giving him an actual live-arm sense of timing and location. Fully adjustable throwing head pitch locators will quickly position pitch (high, low, and inside, outside) in up to four locations within the strike zone to allow you to instantly change locations between pitches. You can work one quadrant of the strike zone and quickly move to a different quadrant for the next pitch. Pitch locators will also lock position to provide precise repeatability.