Still searching for the most durable bike inner tube? Stop looking up now and try ours. It will exceed your expectation!<br><br><b>Features:</b><br>Made To Last: The bicycle mtb inner tube is made with steady and durable butyl rubber. It shows amazing sealing performance, ozone resistant, anti-aging and electrical insulation merits.<br><br>Size Available: The bike tube 26''×1.9~2.125''. It fits tire width 1.9''-2.125''. <br>YunSCM store has 3 Sizes available. Standard AV32mm/ AV48mm/AV60mm schrader valve..<br><br>Comfort is the first: The replacement tires ensure better shock absorption for upgrade riding experience. Your safety and comfort is our top concern.<br>