SMC KQ2R09-11A PBT Push-to-Connect Tube Fitting, Plug-in Reducer, 5/16" Tube OD x 3/8" Fitting Size Straight plug-in reducer to connect a tube to a push-to-connect fitting of a different size Push-to-connect inch tube connection on one end and a plug-in fitting connection on the other end PBT body for resistance to corrosion Operating pressure range of -14.5 to 145 psi (-100 kPa to 1 MPa) Operating temperature ranges of 23 to 140 degrees F (-5 to 60 degrees C) (ambient) and 32 to 104 degrees F (0 to 40 degrees C) (fluid) This product is not intended for use in potable water systems