Rotary 13463 PK3 Blades Replaces: Grasshopper 320239 Fits: Grasshopper 3 for 52" Deck, 3452, 3452, 6052, 6052, 6152, 9052, 9052, 9252, 9252, 9352, 9352, 9552, 9552, 9652, 9652, 9852, 9852 Length 18"; Width 2-1/2"; Center Hole Diameter 1/2"; Thickness .24"; Set of 3 Newer version of 3380