Any player who has the ability to walk out the back door to hit is at a distinct advantage over his competition...players just do not swing it enough otherwise!
*all throw official game weight & size balls though there are a few built for light balls only
The most popular types from backyard baseball to pro baseball. They use a spinning wheel(s) & a motor to propel the wheel(s). Most wheel pitching machines have adjustable speed controls & direction adjustments mounted on a steel frame that's attached to a tripod. All run on 110v current & can handle a generator. Most can be purchased as baseball pitching machines, softball pitching machines & some are in a combo unit for both sports. 1 wheel is entry level, 2 wheel are most popular & now 3 & 4 wheels that throw about anything you could want at Major League speeds.
These are sometimes known as Iron Mike Pitching Machines. That is the made in USA brand you may have seen & used at a commercial batting cage. They weatherproof & tough enough for years of service without trouble. All have auto ball feeders in a rack or a huge hopper that holds hundreds of balls.
Some very clever engineers have created alternative styles that fill particular needs. The Zooka Pitching Machine uses compressed air & rechargeable internal battery that is an engineering wonder. Our UPM 45 Ultimate Pitching Machine is the official model for Cal Ripken baseball & softball machine pitch leagues. It uses a spring loaded concept so needs no electricity.