Item Type: Bicycle Inner TubesMaterial: Butyl RubberProduct Color: As Pictures Shown Product Weight: Approx. 146g / 5.2oz .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Made of 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. 4Electric Bicycle replacement inner tubes are suitable for most electric bicycle bikes. 5The tube is equipped with an Bent valve, never let your bike go flat with a replacement bike inner tube tire on hand.