A SpinFin is a rubber like device to attach to your softball of choice to assist in learning the different spin work for movement pitches, and change up!
The best thing about a SpinFin is its versatility. We place it where the finger needs pressure, or simply to see the softball’s spin direction.
A SpinFin is a rubber like device to attach to your softball of choice to assist in learning the different spin work for movement pitches, and change up!
The best thing about a SpinFin is its versatility. We place it where the finger needs pressure, or simply to see the softball’s spin direction.
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