Outdoor Edge Replacement Knife Blades compatible with 3.0" Razors manufactured after 2020. FeaturesJAPANESE 420J2 STAINLESS STEEL - Blades are precisely heat-treated and hand finished shaving-sharp to ensure excellent edge retention and performance.INDIVIDUALLY VACUUM SEALED - Each blade comes sealed in a plastic pouch with PVC blade cover to protect the blade from the elements and to improve safety when transporting and changing blades.RAZOR SHARP AND TOUGH AS NAILS - Versatile drop point design is a true work horse for the most demanding chores and equally suited for fine, detailed cuts.