Sterile. Individually Packaged. Made from premium quality Swiss carbon steel and British stainless steel. Computer controlled grinding, sharpening and polishing, ensures consistently smooth incision properties. Sterilized by GAMMA radiation 2.5m-RADS. A Vapor Corrosion Inhibitor (VCI) paper lining, leakage testing, and an aluminum foil peal pack help insure quality and integrity when ready to use.