Tube AUTHOR 700x35/50C . 100% all butyl rubber made with extremely air-tight. Keep air pressure in bicycle tyre longer than cheaper tubes made of syntehtic rubber.
- Presta valve 40 mm.
- Less air loss = having to inflate less.
- 100% quality control, each AUTHOR tube is individually examined at the factory to ensue air-tightness.
- ETRTO 35/50-622/635.
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| black | 700x35/50C = UA#37238211 |