Protected Vent, -, Thread Size 1/2 In., Dia. Hex Flats (In. ) -, Height 1.31 in, Top Cap Dia. (In. ) 1 1/4 in, Base Square (In. ) 7/8 in, Overall Length (In. ) 1 5/16 in, Max. Operating PSI -, PSI -, Max. Operating Temp. -, Vacuum (In. Hg) -, Aluminum, Provide a Labyrinth Air Path Restricting Direct Entry of Dirt and Moisture to Reservoir or Gearbox. This item has been restricted from sale in the following state (s): []