Features1Using butyl rubber material, it has better air tightness, heat resistance and durability. 2The butyl rubber tire inner tube can absorb the vibration of uneven roads, thus ensuring comfortable and safe driving. 3Simple installation, and the old tire inner tube can be easily replaced within a few minutes, which is timesaving and efficient. 4Bicycle replacement inner tubes are suitable for most road and mountain bikes. 5The tube is equipped with an Schrader valve, never let your bike go flat with a replacement bike inner tube tire on hand.SpecificationItem Type: Bicycle Inner TubesMaterial: Butyl RubberProduct Color: As Pictures Shown Product Weight: Approx. 103g / 3.6ozPackage List1 x BicycleInnerTubes