Franklin Gator Grip Knob - Anti-Vibration - Improves Grip 24051C -- This grip knob fits onto the handle of bats and acts as a secondary grip to increase your overall control. Plus, the knob reduces vibrations when the bat makes contact with the ball. Slides right over the knob for a form fit, the Franklin Gator Grip Knob absorbs and reduces vibration while also enhancing the grip. The Grip Knob also protects the heel of your hand, with or without wearing a batting glove. League and tournament approved. Fits aluminum or wood bats. FEATURES: Absorbs shock and reduces bat vibration after contact -- Enhances grip on the bat -- Ultra-durable, long-lasting construction.