Developed by MLB star and professional hitting coach Jacob Cruz, this is a training item designed to improve bat speed and swing accuracy. By attaching the Line Drive Pro Trainer to your bat, you can instantly check the quality of your swing based on the ball's trajectory. Through repeated practice, you'll naturally develop proper hand usage and barrel control (contact ability), enabling you to hit accurate line drives towards center field. ✅ Instant visual feedback for swing improvement ✅ Improves bat control and contact ability ✅ Muscle memory effect that ingrains the correct swing ✅ Can be used with commercially available tennis balls Baseball practice / Batting training / Swing speed improvement / Made in USA