This listing is for a PAIR of quality Impac Inner tubes by SchwalbeThese will fit 28"/700c wheeled bikes running tyres from 28c-45c Standard 40mm Schrader 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 (32-622) 700 x 38c (32-622) 700 x 40c (32-622) 700 x 45c (32-622)27 x 1 1/4 (28-630) 700 x 38BC (32-622).
