Replacement blades. The blades are vacuum heat treated Japanese 420J stainless steel with 57 Rockwell hardness rating. You get 6 replacement blades (knife sold separately); You can sharpen a blade, or just push the lock button, remove, and put in a shaving-sharp new one; Blades are 3 1/2"l. Always have the edge for hunting and other outdoor chores! Order Now! WARNING: You must be 18 or older to purchase Cutlery. Cutlery cannot be shipped to Marin, Napa, Ventura and Yolo counties, CA; D.C.; MA; Miami-Dade and Sarasota counties, FL; Canada or Puerto Rico. Please check your State, County and City laws for restrictions before ordering Cutlery. 6-Pk. of Razor-Blaze Replacement Blades