12t tail pulley * 1 ,m3*3 Set Screw * 1
speed up tail
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12t tail pulley * 1 ,m3*3 Set Screw * 1
speed up tail
12t tail pulley * 1 ,m3*3 Set Screw * 1
speed up tail
12t tail pulley * 1 ,m3*3 Set Screw * 1
speed up tail