5 15/16" BORE (5.9385/5.9415) 1 1/2" X 3/4" STD KEYWAY (2) 3/4-10 UNC SET SCREWS SPROCKET FOR ANSI 160-2 CHAIN 80 TEETH 52.100" O.D., 50.943" P.D. "C" STYLE 7.352" O.A.L. 10" HUB O.D. X 3 1/8" LENGTH EQUAL HUB PROJECTIONS FABRICATED CONSTRUCTION CARBON STEEL