The Louisville Slugger UPM 30 Instructor Pitching Machine. Weighing only 12 pounds it is extremely accurate and very affordable. This is also an arm action machine and does not require electricity. This machine is easy to operate throwing real baseballs and up to 11 inch softballs at speeds between 15 and 30 miles per hour. It is ideal for backyard use with even the youngest player. If you prefer, you can use any lightweight soft-type ball and achieve speed of up to 50 miles per hour.

See it in action: