Q-Tubes 26" x 1.9-2.125" 48mm Presta Valve Tube 171g. 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.

• .9 mm wall thickness
• Removable Presta valve core
• Q-Tubes Standard Line packaging features environmentally friendly soy ink printing on recycled cardboard