This is a A-980204184 Blade, Disc Mower, RH PN: 980204184Main Description As Following : A-980204184 Blade, Disc Mower, RH P.N: 980204184 Hole Size: .828" / 21mmLength: 5.090" / 129mmThickness: .157" / 4mmType: 10 RHWidth: 1.903" / 48mm Found in Section & Models : Hay Tool Parts > Disc Mower Blades, Marangon MOWER, DISC: MDN170, Marangon MOWER, DISC: MDN210, Marangon MOWER, DISC: MDN245, Marangon MOWER, DISC: MDN285 Associated Items : New Also This is An Aftermarket Product And : Hole Size: .828" / 21mm Length: 5.090" / 129mm Thickness: .157" / 4mm Type: 10 RH Width: 1.903" / 48mm