Total Control Ball TCB 74 Baseball Batting Ball Weighted Training Hitting Batting Aid 3 Ball Pack Perfectly weighted by design, Total Control Balls are used for optimum resistance to develop slow-twitch and fast-twitch muscles Smaller version of TCB ball created in response to stronger, more advanced hitters Features Size: 2.9" in diameter Weight: 425 grams (14.9 oz.) Instant Feedback Limited Space Required Perfect 3 Ball Pack