MTO SPROCKET ROLLERBSAW SPLIT & CAP SCREW1 1/2" BORE (1.500/1.502)3/8" X 3/16" STD KEYWAYON C/L OF TOOTH(1) 1/4-20 UNC SET SCREWSPROCKET FOR ANSI 41-1 CHAIN 18 TEETH3.140" O.D., 2.879" P.D."B" STYLE1" O.A.L.2 3/8" HUB O.D. X 0.7775" LENGTHSOLID CONSTRUCTIONCARBON STEEL