Plug-In Reducer, Application Air, Fitting Side A Connection Type Push-to-Connect, Fitting Side B Connection Type Tube Stem, Fitting Side A Tube Outer Diameter 1/4 in, Fitting Side B Tube Outer Diameter 3/8 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 5/8 in, Specific Fitting Shape Straight Adapter, Release Type Button