Sledge and BallThis is so much fun! Take your sledge workout to the next level! Just like Cup and Ball, this Sledge and Ball works your wrist leverage strength in both isometric and dynamic ways! Also, improving your hand eye coordination is a nice added bonus. There are 2 levels of coordination difficulty. The cup side is easiest. Whereas, the opposite side only has a small hole opening, making it much harder since you really have to get it right on, but with