For use with select PRIMED(TM) batting tees, the Replacement Batting Tee Topper is made from full black rubber to provide durability and help reduce damage to your bat upon miss-hits. Replacement Tee Topper Full rubber construction built for durability Reduces bat damage on miss-hits Key Specs Tee length: 19.5'' Diameter (top): 1.5'' Diameter (bottom): 1.25'' Additional Details For use with the PRIMED(TM) 1-Position (PRD00111) and 5-Postion (PRD00112) batting tees