5 mm.(9/16"-18UNF) - 3/8"MPM 1500 Bar Product description Adapter various applicationsConnections : 5 mm.(9/16"-18UNF) Type M male (hose) - 3/8"MPMDimensions : Hex 5/8" x 1.687" ( ± 43 mm.)Material : st. steelPart number : 21-007-001