Robert Baraban Thunder Ball 3" Increase Hand Wrist Grip Strength
Robert Baraban Thunder Ball.
A new and unique way to work your fingers and test your grip strength
3 inch hollow steel ball
Smooth surface, nothing to grip...really tests finger strength.
Use a carabiner to attach the Thunder Ball to a pulley machine.
Or use a carabiner and chain to attach the Thunder Ball to a weight plate.
Tough Powder coated finish
Carabiner and chain NOT included
We Also Recommend
Ironmind Captains of Crush CoC Grippers Build Grip Hand Strength
Robert Baraban Pinch Grip Converter Turn any Hand Gripper into a Thumb Trainer