TOTAL CONTROL BALL TCB 82 Softball Weighted Training Hitting Batting Aid ~ 12 Ball Pack Perfectly weighted by design, Total Control Balls are used for optimum resistance to develop slow-twitch and fast-twitch muscles Optimum use with front toss, but can be used for side toss and tee work Features Size: 3.2" in diameter Weight: 425 grams (14.9 oz.) Instant Feedback Limited Space Required Perfect 12 Ball Pack