Amazon.com: CO-Z 64 Piece ORFS Cap and Plug Kit Hose Tube and Pipe Hydraulic Fitting Set O-Ring Face Seal Cap and Plug Kit Galvanized 45# Steel with Precision Threading Sizes 4 6
6500-08-12 Hydraulic Fitting 1/2" Male JIC X 3/4" Female JIC Swivel 90 Degree Carbon Steel: Amazon.com: Industrial & Scientific
Flat Face Hydraulic Quick Connect Coupler Set, 3/4" Body x #12 JIC Bulkhead Mount