This is a A-3730225M1 Blade, Disc Mower, LH PN: 3730225M1Main Description As Following : A-3730225M1 Blade, Disc Mower, LH P.N: 3730225M1 Sold In Multiples Of 25Hole Diameter: .728" / 18.5 mmLength: 4.724" / 120 mmThickness: .157" / 4 mmType: 10 LHWidth: 1.890" / 48 mm Stocked As: A-76N921 Found in Section & Models : Hay Tool Parts > Disc Mower Blades, Massey Ferguson MOWER, DISC: 127 Associated Items : New Also This is An Aftermarket Product And : Sold In Multiples Of 25 Hole Diameter: .728" / 18.5 mm Length: 4.724" / 120 mm Thickness: .157" / 4 mm Type: 10 LH Width: 1.890" / 48 mm