Item: NO. JS059
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br /1) 12", 14", 16", 18", 20"
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br /2) Frame: Steel TIG welding, painting, top tube?45*1.0, down tube ?45*0.9mm, front face ?33x1.2mm
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br /3) B. B parts: 3PCS, B. B Axle, B. B Cup.
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br /4) Brake: F Calliper / R drum brake
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