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Amazon.com : RideNow Ultralight Bike Inner Tube 700 x 18-32 Road Bicycle TPU Tire 45/65/85mm Length French Valve Super Bike Light Tube (700x18-32c SV45mm) : Sports & Outdoors
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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) : Amazon.co.uk:
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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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