Like all bladed tools, Black & Decker edgers not only work better when their blades are sharp, they"re safer to operate, too. The EB-024 Edger Replacement Blade offers a factory sharpened, serrated edge for effective cutting, and it is crafted from hardened steel to help ensure durability over time. Designed to work with model number LE400, LE500, 8224, 8235, and 8220 edgers, this replacement blade is backed by a 2-year manufacturer warranty.