| 摘要 |
A hand exercise device which includes a pair of hand grips which are interconnected by a shaft, which shaft is adapted to be axially received within a hollow bore of one of the hand grips. The shaft has a helix groove bored through the free end thereof which cooperates with a through pin lodged within one hand grip so that when axial pressure is applied to the hand grips, the interaction of the actuating through pin and the helix groove causes the hand grips to rotate in counter directions to one another to thereby compress a resistence spring to exercise the wrists, arms and upper body of the user.
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