The Hitting Knob The Hitting Knob is the most revolutionary hitting aid on the market today. If you're looking to quickly & efficiently improve your swing power and mechanics, look no further. Simply slide the bat into The Hitting Knob, Push the bat down until it *clicks* and immediately improve your swing!The Hitting Knob is compatible with: Wood Bats Metal (Non-Wood) Bats Composite Bats Youth Players all the way up to 18+ Whether you're a coach, parent, or player at any level of the game, the Hitting Knob can help you maximize your swing & improve your swing mechanics! INCREASE YOUR BAT SPEED & HITTING POWER: The most revolutionary baseball & softball hitting training aid is here! The Hitting Knob bat weight allows the player to learn proper swing mechanics leading to increased power, bat speed + contact with the ball. Using this tool will force the hitter to keep hands inside the ball, guiding the barrel on the right path to unload through the zone. This compact device increases batting average and slugging percentage, taking your game to new levels. ATTACH THE WEIGHT TO THE END OF THE KNOB: Place The Hitting Knob on the ground & insert knob end of the bat into the opening. Using your body weight, press down with both hands on the top of the barrel to lock the weight onto the knob. You will hear a “click” once engaged. Execute a normal swing & feel the weight keep your hands inside the ball. To disengage, place knob end of the bat on the ground & repeat the process used to engage the device. You will hear a “click” once disengaged. BACKED BY SCIENCE: By adding weight to the knob end of the bat opposed to the barrel it decreases the moment of inertia, which increases your bat speed. This weight placement allows the bat to get into the proper position in order to maximize angular velocity as the bat travels through the swing zone. In addition, this counter weight effect results in the priming of your white fast twitch muscle fibers, which is essential to increasing bat speed. ATTACHES TO ALL BATS: Use on any bat including aluminum, composite, hybrid or wood. See the sizing chart image for the recommended Hitting Knob weight. From softball to baseball, The Hitting Knob works best for ages 8 & up at any level of play from youth to Major Leagues. USE FOR ANY TYPE OF OFFENSIVE TRAINING OR DRILL: The Hitting Knob can be used in every aspect of offensive training including the on deck circle, tee work, soft toss, cage work, slow pitch and fast pitch. To maximize training, use this tool during live batting practice, which simulates the most authentic hitting experience - the body and mind react differently to a ball in motion. SIZING: 8oz | Age: 8-12 | Bat Size: 27"-31" 12 oz | Player Age: 13-17 years old | Bat Size: 31"-32" 18 oz | Player Age: 18+ years old | Bat Size: 33"+