| 摘要 |
An improved twist disc structure having a base disc with an axle in the center thereof for pivotally fitted thereon a movable disc, the upper surface of the base disc being provided with a plurality of undulating tracks. The movable disc has multiple through holes provided therein, and each through hole accommodates a lifting element. The base of these through holes are supported on the tracks. When the movable disc rotates on the base disc, the lifting elements move up and down in the corresponding through holes to massage the points on the soles of the user.
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