Part Number Hose ID A NH Thread B Barb Length L1 Overall Length L 2 Octagon Size Flow Diameter L198-0812B 1/2 3/4"-14 .875 1.56 1-1/16 .37 L198-0612B 3/8 3/4"-11 1/2 .875 1.56 1-1/16 .28 L198-0612 3/8 3/4"-11 1/2 .875 1.56 1-1/16 .28 L198-1616 1 1"-11 1/2 NPSH 1.125 2.00 1-1/2 .84 L198-1012 5/8 3/4"-11 1/2 .875 1.56 1-1/16 .50 L198-1012B 5/8 3/4"-11 1/2 .875 1.56 1-1/16 .50