This is a A-990155 Cutting Disc Brg PN: 990155Main Description As Following : A-990155 Cutting Disc Brg P.N: 990155 Dim A (1): 1-1/4" SQUARE BORE Stocked As: A-W209PPB7-I Found in Section & Models : Tractor Parts Associated Items : New Also This is An Aftermarket Product And : Dim A (1): 1-1/4" SQUARE BORE