This is a A-CM15 Blade, Disc Mower, Flat PN: CM15Main Description As Following : A-CM15 Blade, Disc Mower, Flat P.N: CM15 (Sold in Multiples of 25)Hole Diameter: .827" / 21mmLength: 4.134" / 105mmThickness: .118" / 3mmType: 1Width: 1.850" / 47mm Stocked As: A-76N969 , Crosses To: A-76N969 , , Crossed From: CM15-5 , Found in Section & Models : Hay Tool Parts > Disc Mower Blades, Zweegers MOWER, DISC: CM215, Zweegers MOWER, DISC: 135, Zweegers MOWER, DISC: 164, Zweegers MOWER, DISC: 166, Zweegers MOWER, DISC: 167, Zweegers MOWER, DISC: 168, Zweegers MOWER, DISC: 170, Zweegers MOWER, DISC: 184, Zweegers MOWER, DISC: 210 Associated Items : New Also This is An Aftermarket Product And : (Sold in Multiples of 25) Hole Diameter: .827" / 21mm Length: 4.134" / 105mm Thickness: .118" / 3mm Type: 1 Width: 1.850" / 47mm