Brand New (12) Pack of G5 3-in-1 High Lift Gator Mulcher Blades… (12) Pack of G5 3-in-1 High Lift Gator Mulcher Mower Blades Replaces John Deere Part # AM104489 Blade Length: 16-1/2″ Center Hole: 5/8″ Width: 2-1/2 Thickness. 203″Lift 1-1/4″ Oregon Part # 596-308 For Help Finding Correct Oregon Replacement Parts Visit Following Link. 12 Pack Oregon 596-308 G5 Gator Mulcher Mower Blade for John Deere AM104489. Brand New (12) Pack of G5 3-in-1 High Lift Gator Mulcher Blades.. (12) Pack of G5 3-in-1 High Lift Gator Mulcher Mower Blades. Replaces John Deere Part # AM104489. Oregon Part # 596-308. For Help Finding Correct Oregon Replacement Parts Visit Following Link. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.