Tubes Cycling, Outdoor Recreation, Sports & Outdoors, Tires & Tubes, Zol Zol Road Bicycle Bike Inner Tube 700×23/25C Presta/French 48mm Valve Review by Coyotea August 2, 2018 No Comments Made out of butyl construction Weight 130 grams Presta Valve/French Valve stem 48 mm long Zol road tubes are made to meet training and racing standards.