This listing is for a PAIR of quality Impac Inner tubes by Schwalbe These will fit 26" wheeled bikes running tyres from 1.75- 1-3/8" Standard 40mm long Schrader valve Reinforced dual thickness tube valve interface to prevent punctures Light weight butyl rubber construction Suitable replacement tube to fit the following tyre sizes: 26 x 1.75 (47-559) 26 x 1 3/4 650 x 45C (47-571) 27.5 x 1.35 650 x 35B (35-584) 27.5 x 1.50 650 x 38B (40-584) 27.5 x 1.75 650 x 45B (47-584) 26 x 1 1/4 650 x 32A (32-590) 26 x 1 3/8 650 x 35A (37-590) 26 x 1 5/8 650 x 42A (42-590) 26 x 1 1/4 (32-597).
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