6 (SEI) DURO BICICLETTA 26x1.50/1.75/1.95 TUBO 48MM STANDARD PRESTA/VALVOLA FRANCESE.
Valve Type: Presta Valve (French valve; narrower than Schrader). Valve Stem: Smooth (non-threaded). Core is permanently crimped into the stem. No threading on the stem exterior. Tube Size: 26 x 1.50 / 1.75 / 1.95.