Directly from The Famous Pex Systems Manufacture 2 PCS Lead Free Brass PushFit 3/4" x 3/4" Male Threaded NPT Elbow Fit Copper, PEX, CPVC and PE-RT Pipe 200 PSI and 200 Degrees F. Use in Potable water and Hydronic Heating Applications. No Tools, No Soldering, No Crimping or Glue. Push to Connect