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The RoadTUBE is the modern interpretation of the classic butyl inner tube used by millions of cyclists around the globe.Size: 700mm x 23-30mmWeight: 85gThis tube has a removeable valve coreThe RoadTUBE takes advantage of the practicality and reliability of butyl in a modern and advanced application focused on performance and lightness. The result is a lightweight cycling butyl tube which is perfect for everyday use and as a spare tube.