This is a A-EF100759 Blade, Flail Mower PN: EF100759Main Description As Following : A-EF100759 Blade, Flail Mower P.N: EF100759 New flail mower blade, 1.75" x 3.60" with .54" bolt hole. Fits Mott flail mowers.Hole Size: .54"/ 1.03"Length: 3.60"Thickness: .11"Width: 1.75" Found in Section & Models : Hay Tool Parts > Flail Mower Parts, Mott MOWER, FLAIL: 74 (Course Cut) (Qty: 72), Mott MOWER, FLAIL: 88 (Course Cut) (Qty: 88) Associated Items : New Also This is An Aftermarket Product And : New flail mower blade, 1.75" x 3.60" with .54" bolt hole. Fits Mott flail mowers. Hole Size: .54"/ 1.03" Length: 3.60" Thickness: .11" Width: 1.75"