1.Good damping capacity and soft ,enough width. 2.Excellent gas-tightness and hear resistance 3.Various sizes 4.Valve:English valve ,American valve,French valve and so on. 5.Reducing rolling resistance 6.Pulling strength :6-7Mpa or 8-9Mpa 7.Elongation>380% 8.Used for PC inner tube,MC inner tube,OTR inner tube,AG inner tube,LT inner tube,turcks and busses inner tube. 9.Certification:ISO9001:2000 10.Brand name:Yongtai, Hetai,Bostone 11.we can print your brand on tube. 12.seaport:qingdao 13.payment term:30%deposit,the rest should be pay before delivery the goods 14.packing:each packed in a poly bag,then in a carton e also produc wheel rim and tyre flap,we are seeking joint development with customers from all over the world on the basis of mutual benefit by good quality products and perfect service. some sizes are as follows: SIZE VALVE WEIGHT(g) 450/500-12 TR13 0.60 155/165-13 TR13 0.68 175/185-14 TR13 0.75 185-15 TR13 1.05 650/700-15 TR15 1.30 650/700-15 TR75A 1.30 750-15 TR15 1.40 750-15 TR75A 1.40 650/700-16 TR15 1.30 650/700-16 TR75A 1.30 750-16 TR15 1.40 750-16 TR75A 1.40 825-16 TR77A 1.80 750-20 TR77A 1.80 825-20 TR77A 2.10 900-20 TR175A 2.80 1000-20 TR78A 3.00 1100-20 TR179A 3.20 1100-22 TR179A 3.50 1200-20 TR179A 3.70 1200-24 TR179A 4.50