Blade Width – 2.50. Thickness – 0.250. Blade Length – 18-5/8. Center Hole Size – 7/8. Air Lift – 1-1/8. You can count on the OregonĀ® 92-127 replacement lawn mower blade to be the best in the industry. It delivers a cleaner cut for quality results. Requires 3 blades for 54 cut. Enhanced mulching for bagging and discharge efficiency. Stays sharp and Standard for longer. Fits Kubota models: RCK54P-227Z, RCK54P-321Z, ZD221, ZG227. Fits the Following Models. RCK54P-227Z, RCK54P-321Z, ZD221, ZG227. Replaces the Following Blades.