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ª½®|:25mm 30mm (¤£¥i½Õ½ü)(¤£ù׿û´ß)
ª½®|:30mm (¥i½Õ½ü)(ÅK´ß)
Modified roller--not easy to be derailed- the modified pulley is the first origination in Taiwan.
Specification:
Diameter: 25mm, 30mm (no adjustable)(stainless steel shell)
Diameter: 30mm (adjustable)(iron shell)
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Modification which is the first homemade origination in Taiwan--roller is gone through homemade sharpening to be embedded in track deeply, not easy to be derailed, overcome the tranditional which roller is only appeared on the surface.