The Q-Tubes Standard Line Presta Valve tubes feature QBP's widest variety of tube sizes and valve lengths with a proven record of high quality control and consistent availability. Features: .9mm wall thickness Removable Presta valve core Q-Tubes Standard Line packaging features environmentally friendly soy ink printing on recycled cardboard Master Cartons of Q-Tubes Standard Line tubes contain a total of fifty tubes: Five inner cartons of ten individually boxed tubes Specs: ISO Diameter622 / Road / 29" ValvePresta XLong 75mm+ ISO Width (mm)23mm ISO Width (mm)24mm Wall Thickess.9mm ISO Width (mm)25mm Labeled Size700 x 23-25 Weight128g Substitutes: TU6682, TU6876