Hi-Lift Blade / Ferris 1521227Pack Size:1Ferris 1521227, Ferris 1521227S, Ferris 5021227, Ferris A48185Dealer Choice 50-2220, Green Meadow 91-235, Landscaper Express 1521227, Landscaper Express 3231718, Landscaper Pro 91235, Mow More FE18, NHC 212-0034, NHC SC2801, Oregon 91-235, Rotary 9968, Sunbelt SB-3403, Sunbelt SC-2801, Sunbelt SB-3404, Sunbelt B1PD5008Ferris Requires 2 for 36" deck; 3 for 52" deckLength: 18 ", Center Hole: 5/8 ", Width: 2 1/2 ", Thickness: .250 ", Heavy-duty