You never know when you???ll need to repair your bike. Punctures, wear and tear, and other damage could leave you walking, so be ready to keep riding with this set of Presta valve tire tubes. . Butyl tube. . Includes a removable valve core and threaded valve shaft. . Diameter measures 27.5. . Width ranges from 52mm to 58 mm. . Imported. . 708752081048 29251400006 TU6871