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.
Fits 48" Mower Blades For 180 240 245 260 265 285 320 325 335 345 355D GT242 GT262 GT275 Lawn and Garden Tractors, F510 F525 F710 F725 F735 Front Mowers