This is a A-P68943 Blade, Rotary Chopper PN: P68943Main Description As Following : A-P68943 Blade, Rotary Chopper PN: P68943 Found in Section & Models : Hay Tool Parts > Flail Mower Parts, John Deere ROTARY CHOPPER: 15A (Qty: 34), John Deere ROTARY CHOPPER: 16A (Qty: 42), John Deere ROTARY CHOPPER: 972 (Qty: 42) Associated Items : New Also This is An Aftermarket Product And : Hole Size: 1.031" Length: 8.315" Offset: 1.250" Thickness: .313" Width: 2.500"