ROCKBROS mountain bike inner tube made of premium butyl rubber, delivers excellent air tightness and durability. Fits 29" mountain bike tire width 1.90‑2.35. 48mm long valve, available in Schrader and Presta valve. Perfect spare replacement tube for daily mountain cycling.🚴‍♀️🚴‍♀️🚴‍♀️

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On Aug 24, 2026 at 00:22:04 PDT, seller added the following information: