This is the XS Scuba Combo Low Pressure Tire Filler / Air Nozzle Features: Easy attachment to standard BC quick-disconnect hose One end is a standard tire filler Other end is a nozzle for blowing air Low pressure only - below 200 psi This is one handy item for any diver who needs to inflate inner tubes for a buoy, inflatable buoys with simple stem valves or use for cleaning off sand or dirt before putting items in your vehicle. The Combo Filler has a standard Schrader valve filler for buoy inner tubes, car, bicycle, trailer and any tire using this world wide valve design. "