Push-Fit Adapter Fitting, Application Vacuum, 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 5/16 in, Fitting Material Bio-Based Nylon, Material Grade Not Applicable, Color White, Includes Pre-Applied Thread Sealant Pre-Applied Thread Sealant Not Included, Maximum Operating Pressure 230 psi, Maximum Operating Temperature 200 Degrees F, Overall Length 1 15/32 in WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -