The Heater(R) Spring Away Batting Tee never tips over, never shocks your bat and won't break after the first miss-swing, thanks to the weighted bottom and flexible spring stem. Improve your hand-eye coordination and increase your bat speed and power with this all-ages adjustable tee that accommodates baseballs, softballs and mini balls. The base can be filled with concrete, sand or water as a weight for added support. FEATURES: Baseball and softball batting tee Heavy-duty spring simulates real baseball feel and no bat shock Base can be filled with concrete, sand or water as a weight Long-lasting spring away design won't break like traditional batting tees Reversible tee top accommodates baseballs, softballs and mini balls Excellent for switch-hitting development Improves hand-eye coordination Increase your bat speed and power Stem adjusts for all ages Height adjusts from 24" to 32" Balls not included Recommended for ages 4+ 30 day manufacturer money-back guarantee Manufacturer's warranty: 1 year Model: SAE1999 For additional information relating to the Manufacturer's Warranty, please contact 435-656-1756.