High quality Stainless Steel Surgical blades. Sterilized by Gamma Radiation at a minimum dosage of 2.5m. Rads or 25KGy, with sterility guaranteed for 5 years – as long as the packaging remains unbroken.The blade to handle fitment conforms to ISO 7740 specification, which is important as it ensures the consistency of the manufacturing as well as the blade to handle fitment. Computerized grinding and proprietary polishing processes ensure consistent, clean, sharp cutting edges on every blade. This edge treatment reduces drag and tissue trauma. Stainless steel blades have a hardness of 700 HV, or 58.5 HRC. Surgical blades are individually foil packed with V.C.I paper.