The following items are included in this setThe Original Ernie Parker's Wrist Snapper----Ernie Parker developed The Wrist Snapper training device to teach his students the importance of a proper wrist snap at the pitching release point and to help strengthen the wrist and forearm. This training tool focuses specifically on that part of the release which can present some frustrating problems for the fastpitch player, the snap. This product addresses the problems of weak and incorrect snaps for both underhand and overhand pitching or throwing. The device is great for other sports such as baseball or tennis where a strong wrist snap can help to produce additional power and movement. When the wrist snap is performed properly, the device produces a distinct sound that is both heard and felt, providing instant feedback.The Original Xelerator---The Xelerator Fastpitch Softball Pitching Trainer teaches correct muscle memory nearly 20 times faster than conventional pitching only training.The Cannonball---- The Cannonball Weighted Ball Is Perfect For Rehabilitation, Toning, Therapy, Muscle Memory, Strengthening, And Warm-Up. Throw Against A Solid Wall, Such As Concrete Or Brick