Rockwell Double-Edge Razor Blades are made of Pure Swedish Stainless Steel and are compatible with all double-edge safety razors. The pure stainless steel that forms these blades protects them against rust, while the specialized treatment that crafts these blades ensures the blades retain their exceptional sharpness. Rockwell Double-Edge Razor Blades are certain to provide a smooth, close shave at an unbelievable price. Our goal in making a safety razor blade was to create the best safety razor blade on the market, at a better price than other blades. The attention to detail and manufacturing innovations that have gone into crafting the Rockwell Double-Edge Razor Blade have produced a blade that we feel meets both these criteria.