RPM Power Powerball 250hz Gyrosopic Wrist Exercisers – Rehabilitation and Strengthening, Wrist, Grip, Forearm, Arms and Shoulders

THE #1 BRAND WORLDWIDE – Powerball features a military-grade plastic shell with a hardened, drop-resistant, stainless-steel rotor axle for 100% vibration-free spinning up to 16,000rpm
CORD ACTIVATION – 250Hz Powerball comes with two starting cords for quick and easy activation every time. Take this pocket-sized fitness gadget with you on the go and always have a fully comprehensive workout at your fingertips
SPEED IS POWER – Generate up to 15kg of gyroscopic resistance and build muscle along the entire arm, from shoulder to fingertip. The faster you spin, the stronger the resistance. 250Hz Powerball Classic will strengthen and train your grip, wrist and forearm muscles when used for as little as 3-5 minutes each day at moderate to fast spin speeds
IMMEDIATE RELIEF WITHIN 2 MINUTES – Use Powerball at slower speeds for soothing rehabilitation and gentle strengthening of sore/tight muscles in the wrist, arm and shoulder and relieve pain from injuries such as carpal tunnel, tendinitis, tennis elbow and scaphoid fractures
REFINE YOUR SPORTS & MUSICAL SKILLS – The ideal complement to golf, tennis, cycling, martial arts and all other sports that require movement of the arms and wrists, Powerball builds finger and wrist strength for a powerful grip and improves finger dexterity, making it a must-have item for all sportspeople and musicians (guitar, drums, piano, etc.)