CST 20×4.2 26×4 Bicycle Inner Tubes
CST’s most popular bicycle tube for general-purpose riding. Fat inner tube made of butyl rubber, longer-lasting, and durable tube. 0.97mm wall thickness treatment, more wear-resistant, longer service life. The fat inner tire has Presta Valves available in 48mm, 60mm, 80mm, and 100mm valve lengths.
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