All Heater Pitching Machines are approved for little league and are great for many different training drills. Heater Pitching Machines come in different styles; some pitch baseballs, some softballs, and some a combination of baseballs and softballs. They pitch from fast balls only to a combination of fast balls, curveballs, and sliders. And best of all, the Heater Pitching Machines are very affordable!