Attack the ball with flawless execution by working on your technique with the Markwort(R) Hands Inside Trainer. The trainer is outfitted with a solid urethane J-shaped bar, which helps batters focus on making contact on the inside part of the ball to ensure they make firm contact and send pitches back into fair territory. Train With Purpose: J-shaped trainer promotes consistent muscle memory and better technique at the plate Forces batters to strike the inside part of the ball rather than the trainer itself Adjustable design allows for use with different sized bats Additional Details: Made of durable 85 durometer urethane Can be used with baseballs and softballs Universal design can be set up for left and right-handed batters Accommodating design fits most standard rubber batting tees