Union Reducer, Fitting Material Brass, Flare Angle 45 Degrees , Application Natural Gases, LP Gases, Fitting Side A Connection Type Flared, Fitting Side B Connection Type Flared, Fitting Side A Tube Outer Diameter 3/8 in, Fitting Side B Tube Outer Diameter 1/4 in, Fitting Thread Size 5/8 in -18 x 7/16 in -20, Hex Size 5/8 in, Maximum Operating Pressure 1,000 psi, Maximum Operating Temperature 250 Degrees F, Overall Length 1 3/8 in, Specific Fitting Shape Straight Reducing Connector