John Deere GX20250 L120 L130 Mower Blades (Set of 3) OEM Part Numbers: GX20250 / GY20568 Replaces OEM Part Number(s): 3 In 1 Blade John Deere lawn mower blades are manufactured with a combination of carbon and boron to provide hardness for a long life and sharp edge without breakage. Standard Style Mowing Blade