Brand New Oregon (12) Pack of G6 Gator Mulcher Mower Blades… (12) Pack of G6 Gator Mulcher Blades Replaces John Deere Part #’s AM104490 (2) Required for 36″ Cut (3) Required for 54″ Cut Blade Length: 18″ Center Hole: 5/8″ Blade Width: 3 Blade Thickness. 250 Oregon Part # 396-726 Look Up Correct Blade at Following Link. 12 Pack Oregon 396-726 G6 Gator Mulcher Blade for John Deere AM104490. Brand New Oregon (12) Pack of G6 Gator Mulcher Mower Blades.. (12) Pack of G6 Gator Mulcher Blades. Replaces John Deere Part #’s AM104490. (2) Required for 36 Cut. (3) Required for 54 Cut. Oregon Part # 396-726. Look Up Correct Blade at Following Link. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.