1.Model number:4.00-8
2.Valve:TR87
3.Weight:370g
4.brute force:7MPA
5.elongation:400%

 At present,we can produce many kinds of nature inner tube .

such as:

truck inner tube

         1200-20

          1100-20

         1000-20

         9.00-20

         8.25-20

         900/1000/1100-16

         8.25-16

         6.50/7.00-16

         5.50/6.00-16

         6.00-15

         6.50/7.00-15

car inner tube

         175/185-14

         155/165-13

         7.50-16

         8.25-16

         5.00/4.50-14

         5.00/4.50-12

         4.50/5.00-12

motorcycle inner tube

        400-8

        350-8

        250-4

        350-4

        200*50

        300-17

        275-17

        300-18

If you have any questions,please don't hesitate to tell me.