AAF HERMAN NELSON MCQUAY GC5021C MOTOR COUPLING .5"X 1.25" NOTES: THIS COUPLING DOES NOT INCLUDE SET SCREWS ORDER QTY 3 OF 4SDL2239A SET SCREWS WITH THIS COUPLING SEE ALTERNATE NUMBER GCA500015A FOR UNIVERSAL COMBINATION 1/2" +. 5/8" X 1.25" Coupling