5/8" Compression x 1/2" PVC Adapter, Used To Join Hose Directly To PVC Fitting Or Pipe, Adapts Connections To Water Source, Standard PVC Glue & Primer Required, Not Included, 60 PSI Maximum Pressure, Use With 5/8" Poly Tubing Only, Use To Join 5/8" Tubing Directly To 1/2" PVC Pipe.