Used by over 2000 high schools and colleges! The AST
(patented) is unlike any other swing trainer available. Designed to help
experienced players perfect their bat skills and beginning players to
learn proper mechanics, a forward arm and outside swing barrier
simultaneously eliminate both "dipping" and "casting". And, the height
adjustable (24"-40"), movable arm positions the ball anywhere across the
strike zone to realistically represent inside and outside pitch
locations. Use the AST to build a compact swing, keep the "hands inside
the ball" and develop a "quick" bat. Use it to increase bat speed and
learn to "hit the ball where it's pitched". Includes a two-year manufacture warranty!