This is a A-9805078 Disc, HD PN: 9805078Main Description As Following : A-9805078 Disc, HD P.N: 9805078 Length: 13-1/4"Spline: 6Width: 9-7/8" Stocked As: A-56452100 Found in Section & Models : Hay Tool Parts > Disc Mower Parts, Ford / New Holland MOWER, DISC: 442, Ford / New Holland MOWER, DISC: 452, Ford / New Holland MOWER, DISC: 462, Ford / New Holland MOWER, DISC: 463 (R0526>), Ford / New Holland MOWER, DISC: 465 Associated Items : New Also This is An Aftermarket Product And : Length: 13-1/4" Spline: 6 Width: 9-7/8"