... structure 4.heat-resisting, aging resistance 5.Highly Tear Resistant, high airtightness motorcycle inner tube ModelweightRubber contentPulling strengthTensile strengthAir valve20*1.95/2 ... -6 , 12 1/2 x 2 1/2 , 315x55 , 110/50-6.5 ,2.50-8 ,12 1/2 x 1.75 , 9 x 3.50-4 , 2.50-10 ,3 ... .50-6 ,3.50-4 ,3.00-4 , and ...