Q-Tubes Superlight tubes for lightweight high performance featuring removable valves and .76mm wall thickness with Q-Tubes reliability Features: Q-Tubes Superlight packaging features environmentally friendly soy ink printing on recycled cardboard Master Cartons of Q-Tubes Superlight tubes contain a total of fifty tubes: Five inner cartons of ten individually boxed tubes Specs: ValvePresta Short 32-40mm ISO Width (mm)56mm Shaft TypeThreaded ISO Width (mm)57mm ISO Width (mm)55mm Wall Thickess.76mm ISO Diameter584 / 650b / 27.5" ISO Width (mm)53mm ISO Width (mm)54mm Labeled Size27.5 x 52/58 Weight144g ISO Width (mm)58mm ISO Width (mm)52mm