Features of the Q-Tubes Schrader Valve .9mm wall thickness Removable Schrader 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 ISO Width (mm), 58 ISO Diameter, 584 / 650b / 27.5in. in. Valve, Long Schrader Shaft Type, Smooth Labeled Size, 650B x 52/58 Weight, 250 Wall Thickess, .9