Sunlite Utili-T Thorn Resistant Presta Valve Tube, 650B (27.5 x 2.00 - 2.35") / 32mm, Black Sunlite - Utili-T Thorn Resistant Presta Valve Tubes 27.5x2.00-2.35 PV 32mm Sunlite UtiliT Thorn Resistant Presta Valve Tubes 27.5x2.00-2.35 PV 32mm Weight lb. (0 kg) Model Number 63645