Designed to eliminate several hitting sins including casting the hands, extending front arm, dropping the hands, upper cutting, & weak hip rotation. Promotes a short, compact swing, quicker bat speed, and proper mechanics. Two models available to choose from. The new model 5000 incorporates many improvements over the old 3000. The 5000 is designed to allow for any swing philosophy. Downward, upward, and level swings are now possible with the new angle adjustment feature. Includes 2 different size pole extensions and upper deck tee location. The 5000 also features new & improved 6Ã¢ÂÂ tees for added performance. The model 1500 features an angle adjustment but is designed to promote a downward swing only. Constructed from heavy-duty steel with a rubber-coated finish. Great for right & left-handed baseball & softball players.