Merits of butyl inner tubes: high temperature resistance, aging resistance, high gas tightness, 180 days without inflated

available  sizes: 

Number	Size	Width                                         (mm)
1	10*2	46
2	12*1.75/1.95	43
3	14*1.75/1.95	43
4	16*1.75/1.95	43
5	18*1.75/1.95	43
6	20*1.75/1.95	43
7	22*1.75/1.95	43
8	24*1.50/1.75	43
9	24*1.75/1.95	43
10	26*1.50	43
11	26*1.75/1.95	43
12	24*13/8	37
13	26*13/8	37
14	28*11/2	43
15	28*1.50/1.75	43
16	26*21/2

Bicycle butyl Rubber inner tube