Bulkhead Union Application Air Fitting Side A Connection Type Push-to-Connect Fitting Side B Connection Type Push-to-Connect Fitting Side A Tube Outer Diameter 1/4 in Fitting Side B Tube Outer Diameter 1/4 in Fitting Material Nylon Color Black Includes Pre-Applied Thread Sealant No Maximum Operating Pressure 290 psi Maximum Operating Temperature 176 Degrees F Overall Length 1 3/16 in Specific Fitting Shape Straight Bulkhead Union Release Type Button