Dixon Valve manual industrial interchange pneumatic fitting coupler. Made of steel as standard with steel tubular valve. Nitrile (Buna-N) seals are standard, providing a temperature range of -40 to +250 degrees F (-40 to +121 degrees C). 1/2-inches coupling and 1/2-inches NPTF female. Steel componentry is plated using ROHS compliant trivalent chrome. 1-inch hex size. 1.24-inches maximum OD. 3.06-inches length.