Fits most AYP, MTD, Murray, Sears, Snapper, and other mowers. All blades have 1" center hole with a cover washer and 6 reducing washers in 3/8", 7/16", 1/2", 9/16", 5/8", and 13/16". 2-1/4" wide universal mulching blade. Made in USA. 21". 10.85 lbs. Carded. Length: 2. Width: 3. Height: 25.25