Schwalbe SV 40mm Tube Item 12B (26") 26–27.5 × 0.80–1.10

Schwalbe standard bicycle inner tube no. 12B. For bicycle and wheelchair tires in size 26" inch (ETRTO 20/28-584/590). Retains air for longer than average. Thanks to the best material quality and uniform wall thickness. Maximum reliability that has proven itself millions of times over.