Specs: Height: 6 7/8". Heavy Duty: TRUE. Heavy-Duty version of part 285-456. 5 pt. star blade mount. Includes nut, blade bolt, washer and mounting bolts. Uses 275-280 spindle pulley for 38" decks. Uses 275-284 spindle pulley for 42" decks. Handy Hint: Install spacer, pulley than nut. Replaces OEM Number: Husqvarna: 582922301, 532130794, 130794; AYP: 532130794, 130794; McCulloch: 532 13 07-94. Fits: 36", 38" and 42" ventilated deck using 5 pt. star shaped center hole. Stens one-year warranty ensures reliability and performance for every part. Stens branded parts are trusted by professional dealers to perform OEM quality repairs.