Model: UT/105/6800/5800. Upper pulley: LW-UT/105 (13T), 6800 (16T). Lower pulley: LW-UT/105 (18T), 6800 (17T). LW-UT/LW-105 :Ceramic Bearing. LW-UT/LW-105 :Gold Plated Surface. Surface Gloss.
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