Teaches control of various ball rotations
Allows visualization of any ball rotation
Teaches how spin directly affects ball movement and control.
Teaches speed in attaining the correct throwing grip.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 3.9 inch
Height : 2.7 inch
Length : 3.9 inch

Item Weight: 6.4 ounce (View shipping rates and policies)
Shipping Weight: 6.4 ounce (View shipping rates and policies)

ASIN : B007WYNXDI