6PK Oregon 396-719 G6 Gator Mulching Blade for 54 Cut John Deere M143520. 396-719 Replaces OEM# For John Deere: M136185, M136194, TCU14939, TCU18678, TCU21475, TCU30315, M135334, M136195, M144652, M164016, TCU30316, TCU30317, M143520, M145516, M152726 Fits Models: Fits John Deere: GT225-GT245, GX255, GX325-GX355, LX266, LX280, LX288, X340, X465-X495, X500, X520, X534, X540 and X575-X595; requires 3 for 54″ deck Specifications: Center Hole: 13/16 Length 18-15/16 Width: 3 Thickness: 0.250 Offset: 1/2 Air Lift: 1 1/4″California Prop 65 – This product can expose you to certain chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. 396-719 Replaces OEM# For John Deere: M136185, M136194, TCU14939, TCU18678, TCU21475, TCU30315, M135334, M136195, M144652, M164016, TCU30316, TCU30317, M143520, M145516, M152726 Fits Models: Fits John Deere: GT225-GT245, GX255, GX325-GX355, LX266, LX280, LX288, X340, X465-X495, X500, X520, X534, X540 and X575-X595; requires 3 for 54″ deck Specifications: Center Hole: 13/16 Length 18-15/16 Width: 3 Thickness: 0.250 Offset: 1/2 Air Lift: 1 1/4″ California Prop 65 – This product can expose you to certain chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm.