#10 Suction Fittings with R-134a Port

Oring suction side fitting with an R-134a charge port.  The fitting has a 7/8"-14 thread for the suction (low side) hose connection, and the compressor fitting.   If your compressor has the two different size fittings these are the correct fittings, see the pictures for a sample.  If your compressor has the same size fittings you need tube-o fittings.

The fitting is made of steel, and uses orings for both connections.   This fitting is common on Sanden compressors.