Dixon Valve manual industrial interchange pneumatic fitting coupler. Made of brass with steel sleeve and steel tubular valve as standard. Nitrile (Buna-N) seals are standard, providing a temperature range of -40 to +250 degrees F (-40 to +121 degrees C). 1/4-inches coupling and 3/8-inches hose ID barbed. 3/4-inches hex size. 0.88-inches maximum OD. 2.53-inches length.