The Heater Curveball Pro Pitching Machine accurately pitches leather baseballs, machine pitch dimple baseballs and wiffle balls too. It throws RH & LH curveballs and sliders plus game like fastballs too! It is very portable, weighing only 35 lbs so it goes from trunk to ballpark in one trip! The air filled pitching wheel improves overall pitch accuracy and reduces the wear on the tire and leather baseball seams too. The wheel is fully enclosed for maximum safety. Speeds adjust from 25 mph to ...