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FITS MULTIPLE TYRE SIZES: suitable for 28\; Product description Can be used on a variety of sizes: the bicycle tube fits the model of the racing car 700/28 inch Gravel and 29 inch MTB. bicycle inner tube french valve: 45 mm; Product description Can be used on a variety of sizes: the bicycle tube fits the model of the racing car 700/28 inch Gravel and 29 inch MTB. bicycle inner tube french valve: 45 mm; Can be used on a variety of sizes: the bicycle tube fits the model of the racing car 700/28 inch Gravel and 29 inch MTB. bicycle inner tube french valve: 45 mm