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Electric Bicycle Crank
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适用于电动自行车的脚蹬曲柄，螺孔14*1，左右正反牙，孔距90mm。还在为电动车超重而担心？上不了牌？被帽子蜀黍抓？这款打印曲柄对比相同尺寸的金属曲柄可减重约0.25kg。但请注意强度有限，请不要施加太大的力气
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