This is a A-1994762C2 Pulley Assy, Driven, Unloader Jackshaft PN: 1994762C2Main Description As Following : A-1994762C2 Pulley Assy, Driven, Unloader Jackshaft P.N: 1994762C2 Inside Diameter: 1.252"Outside Diameter: 18.62"Pulley Diameter: 1Replaces: 1994762C1 Replaces: 1994762C1 CASE/INTERNATIONAL HAR. , Crossed From: AV100367 VAPORMATIC , WN-1994762C2 , , WN1994762C2 , Found in Section & Models : Tractor Parts Associated Items : New Also This is An Aftermarket Product And : Inside Diameter: 1.252" Outside Diameter: 18.62" Pulley Diameter: 1 Replaces: 1994762C1