Notched Air-Lift Blade / Grasshopper 320239Pack Size:1Grasshopper 320239, Woods 70104, Woods 70117Dealer Choice 50-2147, J. Thomas GR3380, J. Thomas GR-3380, Landscaper Express 231248, NHC 212-4000, Oregon 91-532, Rotary 3380, Rotary 13463, Stens 320-036Grasshopper 3452, 6052, 6152, 9052, 9252, 9352, 9552, 9652 and 9852; requires 3 for 52" deckLength: 18 ", Center Hole: 1/2 ", Width: 2 1/2 ", Thickness: .250 ", Heavy-duty, Requires 3 for 52" deck