Brand New (6) Pack of 3-in-1 Gator Mulcher Mower Blades… (6) Pack of 3-in-1 Gator Mulcher Mower Blades Replaces John Deere Part # GX20249, GX20819 & GX20567 (2) Required for 42″ Cut, 100 Series Tractors Blade Length: 21-3/8″ Center Hole: 11/16″ Outer Holes: 3/8″ Center to Center: 3-11/16″ Width: 2-1/2″ Thickness. 187 Oregon Part # 92-676. 6 Pack Oregon 92-676 Gator Blade Fits John Deere GX20249 GX20819 GX20567 42. Brand New (6) Pack of 3-in-1 Gator Mulcher Mower Blades.. (6) Pack of 3-in-1 Gator Mulcher Mower Blades. Replaces John Deere Part # GX20249, GX20819 & GX20567. (2) Required for 42 Cut, 100 Series Tractors. Center to Center: 3-11/16. Oregon Part # 92-676. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.