40 mm Multispinner – Grip & Wrist Strength Trainer
The 40 mm Multispinner is a rotating handle designed to build functional strength in the hand, wrist, and forearm. Its free-spinning design forces your stabilizer muscles to work through every movement, making it ideal for arm wrestling, grip training, and general strength development.
 
Strengthens:
Wrist flexion & extension
Cupping and rising strength
Pronation & supination
Finger and overall grip strength
Forearm stability and endurance
Perfect for cable machines, loading pins, and resistance setups.