Description Set of six (6) Japanese 420J2 stainless steel replacement blades for 3 times the sharpness of a standard utility knife. Each blade is heat treated and hand finished with a sharp surgical cutting edge. 3.0-inch drop point blades are compatible with the following models: 3.0-inch RazorLite EDC, 3.0-inch Onyx EDC, 3.0-inch RazorWork