Champion Sports Weighted Training Baseballs Set\r\nChampion Weighted Training Baseballsimprove pitching performance with weighted baseballs.Same feel as a regular baseball.Leather cover with rubber and cork core.Graduated color coded weights.Increase weight as your arm strengthens.Nylon mesh carrying case. Dimensions:4-12 oz, 9\” diameter\r\nFeatures:\r\n\r\nGradually increase the weight of the ball as your arm strengthens\r\nSet of 9 balls weighted from 4-12 oz\r\nNylon carrying case for transportation\r\n9\” D\r\nAssorted colors\r\n\r\nItem # BBWTSET