Gyro Ball Power Trainer Palla Dispositivo di Rafforzamento Polso Esercitatore Avambraccio
The Maximum Possible Rotation Speed Exceeds 12,000 Rpm, Which Can Generate Resistance Of Up To 32kg. Good Trainer. If You Want To Improve Your Wrist, Grip And Arm Strength, Then The Wrist Training Ball Will Be Your Perfect Choice!