From bat lag to contact the shot which travels through the chambers actually speed up the bat. When the shot moves form bat lag to contact the centrifugal force of the shot moving speeds up the hands and the bat. No other weight does this. This gives us the ability to work on the fast twitch muscles rather than the big muscles like other weights
"SWISH" AND IT'S MEANING - The "swish" is the immediate feedback you get when using the RBI Pro Swing. The tighter and quicker you can snap the shot through the chamber the more defined "swish" you get. The "swish" illustrates the power that is transferred from your body into the point of impact. The point of impact is the moment you hit the ball and this moment is a fraction of a second. As a hitter, you want to transfer maximum power at this point.Scientifically, the physics behind the idea is simple. You generate power during your swing.
