Joe&s Tubeless Rim Strips are specifically designed to secure the tire inside the rim with no loss of air from the rim Key features Fits XC rims 26" & 29" 17-19 mm inner rim width 50g per strip including valve Fits rims with Presta valve hole openings This package Contains 2 High qu High-quality tubeless strips with integrated Presta valves with removable cores 1 Presta valve adaptor for easy inflation 1 Spare presta valve core