Set of 3 Oregon® 98-677 Heavy-Duty Commercial 25″ Replacement Blades for 72″ cut Cub Cadet & MTD Pro Mowers with 3/4 Center Hole (3). You can count on the Oregon® 98-677 replacement lawn mower blade to be the best in the industry. It delivers a clean cut for quality results. Requires 3 blades for 72 cut. OEM Blade #’s. Cub Cadet Commercial Zero-Turn Mowers (72″ Decks), Cub Cadet Tank M72 Series (72″ Decks), Cub Cadet Pro Z 700 & 900 Series (72″ Decks), MTD Pro Z Series Commercial Mowers (72″ Decks), All heavy-duty MTD platform 72″ configurations explicitly requiring a triple 25″ blade setup equipped with a 3/4 round center hole spindle pattern. M72-CT, M72-GN, M72-GN33, Pro Z 772L, Pro Z 772S, Pro Z 972L, Pro Z 972S, Pro Z 972 SD, Pro Z 972 SDL. You are purchasing a. SET OF THREE (3). Brand New, Premium Heavy-Duty. This 3-pack bundle is a direct fit for massive. 72-inch Cub Cadet and MTD Pro. Commercial zero-turn decks requiring a. 3/4 round center hole. Engineered to exact factory specifications from high-strength boron steel, this premium series features a robust 0.250-inch thickness to handle high rotational torque and punishing field debris without warping. They provide aggressive high-lift wings that optimize under-deck vacuum, delivering outstanding side-discharge and clean manicuring on large acreage. To guarantee a perfect fit, please verify that your original blade measures exactly. 3/4 Smooth, Round center hole. And a heavy commercial 1/4 thickness, or matches one of the OEM part numbers. Note: This high-impact commercial configuration is built strictly for 72-inch commercial round-shaft decks. Please count your spindles and confirm your machine requires exactly three 25-inch blades before placing your order.