SKLZ Pro X Batting Tee The SKLZ Pro X Tee is an institutional-grade tee that allows advanced players to work on countless drill options to correct swing flaws with quality repetition training. This instructional tee allows players to work the entire hitting zone, improving their bat path, swing mechanics, and body positioning. Its portable design folds and packs easily within its carrying bag. Built with a sturdy steel and aluminum base, along with replaceable tee stems that adjust from 20" to 54". Includes three tee tops, T-bar, and bag.