To encourage a greener, fuller, healthier lawn, be sure to mow with sharp lawn mower blades. Use Genuine John Deere Lawn Mower blades to get the perfect fit on the spindle. Our lawn mower blades are manufactured with a combination of carbon and boron to provide hardness for a long life and sharp edge without breakage. John Deere conducts extensive testing to ensure wear and longevity on all products. Sold Individually.