... ModelweightRubber contentPulling strengthTensile strengthAir valve20*1.95/2.125 240g15%~55%9Mpa-10Mpa380%-550%TR1 ... .elongtion rate:500%,530%,560%,600%,630%2.factory supplier with competitive price and various ... :Tyre and inner tube :2.25-17 ,2.50-17 ,2.75-17 ,2.50-18 ,3.00-18 ... , 12 1/2 x 2 1/2 , 315x55 , 110/50-6.5 ,2.50-8 ,12 1/2 x 1.75 ... 2.50-10 ,3.50-6 ,3.50-4 ,3.00-4 , and so on durable bicycle inner ...