20 mm.(1-5/16"-12UNF)M - ½"NPTM 1000 Bar Product description Adapter various applicationsConnections : 20 mm.(1-5/16"-12UNF) Type M male (hose) - ½"NPT maleDimensions : Hex 1-3/8" x 2.250" ( ± 57 mm.)Material : st. steelPart number : 20-019-006