Zol Mountain Bike Bicycle Inner Tube 26″ x1.95/2.125 Presta Valve 48mm Review June 3, 2019 Wahooligan No Comments Bike Tires and Tubes Made out of butyl construction Weight 200 grams Presta Valve/French Valve stem 48 mm long Zol MTB tubes are made with high standards for a great balance of durability and lightweight. Post navigation ← Park Tool Heavy Duty Steel Tire Lever Set – TL-5 ReviewSE Bikes 20″ Cub Tire 20 RED Review →