Carry a spare tube with you and avoid unnecessary stress! Q Tubes are high quality Presta valves with a removable valve core. Tubes made by Quality Bike Products. All tubes come with a 48mm presta valve stems.
Note: the 700x35-43 tubes are occasionally packaged in boxes labeled 40-45 but the tubes themselves are labeled as advertised here. When in doubt, trust the writing on the tube.
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