This is a A-RBV58 V Hub PN: RBV58Main Description As Following : A-RBV58 V Hub P.N: RBV58 Dim A (1): 1-1/8"Dim B (2): 1-7/16"Dim C (3): 7/16"Dim D (4): 3/4"Bore: 5/8" roundKeyway: 3/16" X 3-3/32" Replaces: PM20010010 SPROCKET/HUB/PULLEY/IDLER , 20010010 EDCOR , Crossed From: WSH10010 , , W20010010DS CASE-IH , 20010010 , , 20010010 , , 3016-0102 , , 6713-57113 JOHN DAY , 673-S80010500 , , 673S80010500 , Found in Section & Models : Chains/ Sprockets/ Pulleys/ Hubs > Hubs, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Dim A (1): 1-1/8" Dim B (2): 1-7/16" Dim C (3): 7/16" Dim D (4): 3/4" Bore: 5/8" round Keyway: 3/16" X 3-3/32"