The utility model relates to a sprocket square head, in particular to a sprocket square head connected with a sprocket of a bicycle.
本实用新型涉及一种链轮方头，尤其是与自行车的链轮接合的链轮方头。
The utility model relates to a sprocket square head, in particular to a sprocket square head connected with a sprocket of a bicycle.
本实用新型涉及一种链轮方头，尤其是与自行车的链轮接合的链轮方头。
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