Replacement Rolled Hi-Lift mower blade for Ariens Gravely 09082400 on 50" 250Z and 260Z mowers. Requires 3 blades for 50" deck. Stens 320-406, 320406. Be sure to match the part number from the owners manual for the part you are replacing with the OEM number(s) listed. All blades are sold individually. Order quantity of (3) blades for 50" cut.