1,high quality rubber 2,suitable for otr tire 3,high quality certification 4,good sales service 5,best ... price Motorcycle Inner Tube 3.00-18 With High Quality Rubber Materials 1, Main ... 21TR4550g300-16TR87480g375-19TR4700g325-16TR4480g200-17TR4290g400-8TR87360g400-6TR1240g450-12TR13640g500-12TR13100g2, Picture Tire Tube: 3, Introduction Tire Tube:We have a factory of inner ...