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【Airtightness】We use butyl rubber with 45% high rubber content.More resistant to aging and high temperature than natural rubber.It has 5 years longevity,which is twice that of ordinary inner tubes.The good air tightness of butyl rubber allows each inflation to be held for 5 to 6 months.Ordinary rubber needs to be re-inflated once every 1 to 2 months.
| Rim Size | 6 Inches |
| Tread Type | Symmetrical |
| Automotive Fit Type | Universal Fit |
| Construction Type | Tubular" or "Pneumatic |
| Seasons | Year Round |
| Ply | 6-Ply |
| Section Width | 3.5 Inches |
| Tire Diameter | 4.00 inches |
| Vehicle Tire ISO Metric Size Description | 3.50/4.00-6 |
| Unit Count | 2.0 Count |
| Manufacturer Part Number | QIF-tube5-6rim |
| Size | 3.50/4.00-6 |
【Airtightness】We use butyl rubber with 45% high rubber content.More resistant to aging and high temperature than natural rubber.It has 5 years longevity,which is twice that of ordinary inner tubes.The good air tightness of butyl rubber allows each inflation to be held for 5 to 6 months.Ordinary rubber needs to be re-inflated once every 1 to 2 months.