Improve your pitching performance with the Club K® Spin Right Softball Spinner. Invented by hall-of famer Cheri Kemp, this training aid teaches proper technique of movement pitches, Fastpitch pitches and overhand throwing to players. The shape of the Spinner is the exact diameter and weight of a softball and allows for clear and concise feedback on spin direction and release. Product Features: Learn the proper rotation for rise, curve, screw, and drop Provides instant feedback on spin direction and release Exact diameter and weight of a softball Additional Details: Instructions and drills shown in the product video Invented by softball Hall-of-Famer Cheri Kemp Used at top collegiate programs throughout the country Style : 727746 DSG Pro Tips Brand : Club K Web ID: 18CLKUSPNRGHTSFTBTRA SKU: 13527685