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36g Ultralight 700C Bike Inner Tube TPU Road Bicycle Tire 28'' 700C Bike Tube Compatible with 700x18C 700x20C 700x21C 700x23C 700x25C 700x28C 700x30C 700x32C Valve Length French 65mm Super Light, Tubes -
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Tubolito TPU Tubes Weigh 50% Less and Are 2X as Strong as Regular Bike Tire Tubes - Singletracks Mountain Bike News
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Amazon.com : 36g Ultralight 700C Bike Inner Tube TPU Road Bicycle Tire 28'' 700C Bike Tube Compatible with 700x18C/23C/25C/28C/30C/32C Valve Length French 65mm (Include 4 PCS Bike Inner Tire Patch Repair Kit) :
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