Slider Poly Lite Ball - Set of 6 - Pack of 2 (12 total) LIGHTER, FASTER, TOUGHER - The PowerAlley Lite-balls are the same size as regulation baseball but weigh only half as much and are designed to last longer for longer batting practice sessions. INNOVATIVE DESIGN - The dimpled design of these balls allow them to reach 60 miles per hour and travel more accurately than regular lite-balls. 12-BALL POWERALLEY PACKAGE - The package includes 12 pitching machine lite-balls made for use with the PowerAlley and PowerAlley Pro pitching machines. WARRANTY AND FREE SHIPPING - Order now from Dazadi and get a 1-year manufacturer warranty and free shipping on your purchase.