... service, pass ISO9001 300*17 motorcycle inner tube: 1. Various Size for motorcycle tube:300-17, 300-18, 250-17, 275-17, 275-18, 250-18 ... -12, 400-8, 450-12, 2.75-14, 2.25-17, 325-16, 90/90-18, 350-16, 2.50-10 ... , 300-21, 460-18, 250-14, 500-12, 110/80-17, 110/80-182. Material: 1) natural rubber tube ; 2) butyl ... bag 2) Or 1PC/color carton box, 50PCS/carton 300*17 motorcycle inner tube