Powerball 250Hz Classic Blue gyroscopic training device

Ultra smooth spin action with an impact-resistant shell, 250 Classic is a high-performance cord-start ball with vibration free 18,000rpm top speed and 0-16kg (0-35lbs) resistance. A lifetime guarantee and reversible inner tracks enhance spin lifespan, this model is effective for all wrist, arm & shoulder rehabilitation/strength building (LCD speed-meter optional).

Powerball weighs less than 500g but develops up to 28kg/60lbs of resistance at maximum spin speed. With this Powerball you simply pull the chord start turning your wrists and feel that gyroscopic resistance.