| 摘要 |
An special device used for wrist snap developing and exercising for softball pitchers. The device is a new combination of existing devices that provide an effective, practical and economical way to maximize a pitcher's capability through proper training and exercise. The device is comprised of a softball; a tensioner device; a means to adjust the tensioner; and a means to adjustably secure the softball to the tensioner wherein said special device may be used to develop and exercise the wrist, fingers and arm of a softball pitcher. The device includes features that permit full padding of the arm and wrist for comfort and endurance. The device includes features for easy adjustment of the tension and the ball location, plus a quick change feature for switching ball types and sizes.
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