Schwalbe SV7A 20 x 1 1/8″ – 1 3/8″ – Presta (28/37-438/451)

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.

• 20 x 1 3/8″ (37-438)
• 20 x 1 1/8″ (28-451)
• 20 x 1 3/8″ (37-451)