| 摘要 |
The exercise device includes a base plate and a handle disposed on the top surface of the base plate. The bottom surface of the base plate has a surface roughness Ra of less than 3 microinches, and preferably 1 to 2 microinches such that the device slides along a floor allowing the user to perform a plurality of exercises. The base plate includes a hole extending through a center thereof, whereby the base plate has a ring-like shape.
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