| 摘要 |
Disclosed is a wheel device for a skate board or a roller skate. A wheel includes a single central hub having an exterior wall and a bore for the housing of rollers, the rollers providing the connection with the hub of a truck; and a tread removably mounted on the exterior wall of the hub. A shoulder of the tread includes a first support face and a second support face, the two faces being parallel to each other and perpendicular to the common axis. The tread is locked in rotation and in axial position on the hub by means of locking screws, including heads abut against the second support face of the shoulder, the screws traversing the shoulder from side to side and attaching on the connecting means of the hub.
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