These particular Derby Double Edge (DE) Safety Razor Blades are made from Swedish Steel.\nThe edges are coated in chromium, ceramic, platinum, tungsten and polymer that combined with a quality lather will delivera close yet comfortable shave every time (average blade life 5 shaves, I know I have tested them).\nCompatible with all new and vintage double edge safety razors including Merkur, Muhle, Feather, Above the Tie, Parker and Executive Shaving.
