●PRO PUCK TECHNOLOGY NOW AVAILABLE FOR ANY BAT: The Velo Puck can convert any bat into a puck knob bat. Simply put the silicone rubber Velo puck on the end of your game bat and start seeing results right away. ●APPROVED FOR IN GAME USE: Approved for in game use with the USSSA, Perfect Game, Babe Ruth League, Cal Ripken League, NABF ●IMPROVE YOUR SWING RIGHT AWAY: Data shows that the VELO Puck improves the bat plane, launch angle, and exit velocity. By moving the mass closer to the hands the bat will feel lighter and easier to swing. ●CHOOSE YOUR SIZE: For bat knobs 1.7 inches or larger choose the large (2.3 oz) size. For bat knobs less than 1.7 inches choose the small (2.2 oz) size.