... factory2>we can supply this following sizes:inner tube for truck and car, for tractor tire, for PRC, ... -9;11.500-8;3>technical specifications 1.TUBE Quality Specifications STRENGTH7MPA8MPA10MPA13MPA14.7MPA ELONGATION380%400%450%480 ... VALVE:TR13 AND TR15TR75A, STRAIGHT AND BENTOTHER VALVE , PLEASE CHECK OUR WEB: tractor tire inner tube and flap--natural inner tube, butyl inner tube,car tube,truck tube ...