Coach Peavy and his motion analysis scientifically shows how the Ritend Bat Weight Swing Trainers Increases bat SPEED & Shortened the hitters SWING!!
Video Proves that the Weight on the end or barrel of the bat slows down the swing
FINALLY! The Science Behind Donuts and Weighted Bats EXPLAIN
Here are some Scientific Studies on how the weight on the end or barrel of the bat slows down the swing