Medium Lift Blade / John Deere M143520Pack Size:1John Deere M143520Dealer Choice 50-4441, J. Thomas BL-0014, Landscaper Express 91380, Landscaper Express 135590, Landscaper Express 201145, Landscaper Express 231015, Landscaper Express 143520, Oregon 90-354, Rotary 10292, Sunbelt B1PD1054, Sunbelt B1PD5054, Sunbelt B1JD1052John Deere GT225-GT245, GX255, GX325-GX355, LX266, LX280, LX288, X340, X465-X495, X500, X520, X534, X540 and X575-X595; requires 3 for 54" deckLength: 19 ", Center Hole: 3/4 ", Width: 2 3/4 ", Thickness: .203 "