This is a A-30BH Seal PN: 30BHMain Description As Following : A-30BH Seal P.N: 30BH A-30BH Seal P.N: 30BH Stocked As: A-452554 , Crosses To: A-452554 , Found in Section & Models : Hay Tool Parts > Rotary Cutter Parts, Bush Hog ROTARY CUTTER: SEVERAL Associated Items : New Also This is An Aftermarket Product And : Inside Diameter: 1.50" Outside Diameter: 1.92"