Q-Tube Superlight tubes are high quality butyl bicycle wheel tubes with a removable core for racing and training. QTube Superlight tubes are available with an 80mm valve stem length for deep set carbon wheels. QTube Superlight tubes are value-priced road tubes with a decreased rotating weight, eliminating the expense and complexity of latex tubes. The QTube Superlight tubes with an 80mm valve stem are what you want on your deep dish aero wheels for easy inflation without extensions.