The Feather Hi-Stainless, Platinum Coated, Double Edge Razor Blades in a 10 Pack are made using the same equipment and to the same high quality control standards as their surgical blades, which are used worldwide in precision optical surgery and micro-surgical procedures. Made to fit any standard double-edge razor. Blades are individually wrapped in air-tight paraffin coated paper and packed in hermetically sealed dispensers to assure long shelf life, even in high humidity areas.