M33x2Mflat - 13mm.(1"-12UNF)M 1500 Bar Product description Adapter various applicationsConnections : M33x2M (flat) - 13mm.Type M (1"-12UNF) MDimensions : Hex 1-3/8" x 2.383" ( ± 60.5 mm.)Material : st. steelPart number : 20-026-016