Meet the Gyro Grip: a centrifugal force fitness trainer that works your upper body hard. It has a 1lb internal weight that spins at speed up to 350RPM. It has a display to show RPM, time, and total revolution. You are alerted via audio tone signals at the end of each exercise.
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The Gyro Grip not only works your arms but gets your heart pumping. The below video shows what you can do with this exercise tool:
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