Schwalbe SV17 (50mm Valve!) 700 x 28-45mm Presta Tube - 50mm
Extremely airtight! The Butyl rubber compound prevents pressure loss and fewer occassions to inflate. Extremely reliable! Quality control for safer cycling: Each tube is checked twice at the factory to ensure safer cycling. Having the correct pressure means fewer punctures and reduced rolling resistance
New 50mm valve version!