... and butyl rubber tube. Some sizes are used for various motorcycle and scooter, can load heavy weight.1. High rolling resistance ... 6. Quality standard: ISO9001-2000, DOT, E-MARK, CCC, SONCAP;Motorcycle tube/Inner tube:(1) Package,each tyre packed by Colorful ... also can according to your requirement(2)Delivery time, Within 20-30 days after receiving your deposit. Street standard Motorcycle tire 2.50-18