This listing is for a PAIR of quality Impac Inner tubes by SchwalbeThese will fit 28"/700c wheeled bikes running tyres from 28c-47c Standard 40mm Presta long valve Reinforced dual thickness tube valve interface to prevent punctures Light weight butyl rubber construction Suitable replacement tube to fit the following tyre sizes: 700 x 28c (28-622) 700 x 30c (30-622) 700 x 32c (32-622) 700 x 35c (37-622) 700 x 38c (40-622) 700 x 40c (42-622) 700 x 42c (44-622) 700 x 45c (47-622).
