Home Strength Training Robert Baraban 4″ Thunder Ball for Finger & Grip Strength

Robert Baraban 4″ Thunder Ball for Finger & Grip Strength

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Must see leg & booty exercise tools

Meet the Thunder Ball: a finger and grip trainer that helps you strengthen your hand for serious competitions. It is a 4″ hollow steel ball with a tough powder coated finish. It has a smooth finish to test your finger strength. You can use a carabiner to attach the Thunder Ball to a pulley machine.

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