20" bicycle inner tube 20 x1.90/2.125 51/57-406 AV 29 mm Auto Schrader valve
The 20" bicycle inner tube is perfect for tyres measuring 20 x 1.90 to 2.125 inches. With a Schrader valve in a length of 29 mm, it is easy to fit and fits a wide range of bikes. Made from high-quality rubber, the inner tube offers reliability and durability for your bike tours. Fitted with a Schrader or auto valve, it is an essential spare part for any bike with the right wheel size.
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