Union, Application Gases, Liquids, Fitting Side A Connection Type Compression, Fitting Side B Connection Type Compression, Fitting Material Brass, Fitting Side A Tube Outer Diameter 1/4 in, Fitting Side B Tube Outer Diameter 1/4 in, Maximum Operating Pressure 3,500 psi, Maximum Operating Temperature 400 Degrees F, Overall Length 1 5/8 in, Specific Fitting Shape Straight Connector, Compatible Fitting Brands CPI, Thread Size A 7/16-20, Thread Size B 7/16-20, Series CPI(TM) WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -