You are purchasing three replacement mower blades for Grasshopper mowers ---Specifications--- Length: 18"<br> Width: 2-1/2"<br> Center Hole: 1/2"<br> Thickness: .240"<br> Notch Lift<br> Made in USA ---Fits Models--- 3452 - 6052 - 6152 - 9052<br> 9252 - 9352 - 9552 - 9652<br> 9852 - 3 for 52" Decks ---Replaces--- 320239 Please double check model and part numbers to verify fitment prior to purchase. Thanks!