100% Brand New and Quality Guaranteed. Replacement for most makes and models of Chinese Scooters, Mopeds, ATV’s & Karts with 125cc-150cc 4 Stroke GY6 Based QMJ/QMI157, QMJ/QMI152 engines Standard, directly replace your old or broken one. Adopted high quality materials that meet or exceed requirements. if you have any question please contact us, we will respond within 24 hours?? Item Description Specification Roller Weight: 6 pieces, 18mm x14mm, 13gInner Diameter (drive face): 13.6mmOuter Diameter (drive face): 115 mm Fitment This part will compatible with most makes and models of Chinese Scooters, Mopeds, ATV’s & Karts with 125cc-150cc 4 Stroke GY6 Based QMJ/QMI157, QMJ/QMI152 engines Package Includes 1 Set as pictured Read more