Top pulley frame <br>spacer Ⅰ <br>Ductile iron pulley <br>bearing <br>Nylon pulley <br>bearing <br>spacer Ⅱ <br>Top pulley shaft <br>spacer Ⅲ <br>Mast <br>folding arm copper sleeve <br>folding arm pin <br>swing shaft seat front shaft <br>copper sleeve <br>swing shaft seat <br>swing shaft seat rear axle <br>front axle <br>cross shaft <br>Front axle copper sleeve, <br>shaft end baffle, <br>swing shaft <br>pin, copper sleeve
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