Generate up to 300% power from your powerball with new Arm Stik. Simply remove the grip band from your powerball, snap it into the circular grab ring, twist the handle to lock and you're ready for a grueling workout that will leave your bicep and tricep muscles reeling in seconds. The Arm Stik closely simulates the grip and action required in many sports (golf, cycling, baseball, tennis) plus a large variety of everyday activities and helps retrain the muscles under a much higher load, bringing significant benefit. Locking your powerball into Arm Stik opens up a completely new range of exercise movements and the possibility to tone and strengthen an even greater range of muscle in the entire arm. Using your Powerball with the Arm Stik helps retrain the muscles under a much higher load, bringing significant benefit. The leverage created by the Arm Stik's handle extension greatly magnifies the force being generated by a spinning powerball. Even at low speeds, the Arm Stik will deliver pulverising inertial resistance from the hand, straight up to the shoulder. The actual effort required to operate the device for just 30 seconds will definitely surprise you... and your muscles. Inexpensive to buy and highly addictive to use, snap your powerball into an Arm Stik handle today - it will exceed your expectation. *Please note: Arm Stik is suitable for all 250Hz Powerballs and a Powerball is not included in the purchase price of this product.