This is a A-3730224M1 Blade, Disc Mower, RH PN: 3730224M1Main Description As Following : A-3730224M1 Blade, Disc Mower, RH P.N: 3730224M1 Sold In Multiples Of 25Hole Diameter: .728" / 18.5 mmLength: 4.312" / 107 mmThickness: .157" / 4 mmType: 10 RHWidth: 1.890" / 48 mm Stocked As: A-90261560 Found in Section & Models : Hay Tool Parts > Disc Mower Blades, Massey Ferguson MOWER, DISC: 125 Associated Items : New Also This is An Aftermarket Product And : Sold In Multiples Of 25 Hole Diameter: .728" / 18.5 mm Length: 4.312" / 107 mm Thickness: .157" / 4 mm Type: 10 RH Width: 1.890" / 48 mm