Protected Vent, Thread Size 1/8 In., Height 1.12 in, Top Cap Dia. (In. ) 3/4 in, Base Square (In. ) 1/2 in, Overall Length (In. ) 1 1/8 in, Aluminum, 40 Micron Filter, 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): []