Champion Sports Lightweight Pitching Machine Softballs (Pack of 12) Soft lightweight seamed pitching machine softball for hitting streak Can be used in most pitching machines Maximizes speed of pitching machines Dozen pack of balls Soft lightweight seamed pitching machine softball for hitting streak dozens Use with any pitching machine that throws standard size baseballs or 12" softballs Maximizes speed of pitching machines Comparable to the ATEC and TUFFY Sold in dozens only