This is a A-DC19535 Disc PN: DC19535Main Description As Following : A-DC19535 Disc P.N: DC19535 Dimensions: 15.14" X 10.625"Spline Count: 6Spline Diameter: 1 1/8" Major Stocked As: A-76N562 Found in Section & Models : Hay Tool Parts > Disc Mower Parts, John Deere MOWER, DISC: 240, John Deere MOWER, DISC: 260 Associated Items : New Also This is An Aftermarket Product And : Dimensions: 15.14" X 10.625" Spline Count: 6 Spline Diameter: 1 1/8" Major