Still looking for the most durable bicycle inner tube? Now stop looking and try ours. It will exceed your expectations! Function: Persistence: mtb bicycle inner tube is made of butyl rubber stable and durable. It has amazing sealing properties, ozone resistance, aging resistance and electrical insulation. sizes available: bicycle tube 26×1 3/8. comfort comes first: the replacement tire ensures better damping effect, thereby enhancing the riding experience.
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