Bicycle pedal mandrel and bicycle pedal mandrel and crank set
The invention relates to a bicycle pedal mandrel, which is assembled in an assembling hole of a crank, and comprises a head part which is assembled in the assembling hole of the crank in a penetrating manner; a limiting part which is provided with an end surface facing an axial direction and facing...
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Format: | Patent |
Sprache: | chi ; eng |
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