This package will satify your shaving needs for a long time. - All Derby Razor Blades are Manufactured from stainless razor blade steel strip from Sweden - All Derby Razor Blades are perforated, hardened and ground by utilizing most advanced equipment - All Derby Razor Blades cutting edges are deposited with CHROMIUM - CERAMIC, TUNGSTEN AND PLATINUM by advanced Spluttering Equipment for optimum EDGE STRENGHT thus longer shaving life - All Derby Razor Blades coated with a polymer for optimum SHAVING COMFORT - From beginning to end, all Derby Razor Blades are subjected to severe Quality Control Inspection at every stage of manufacturing processes by utilisation of unique quality control equipment - All Derby Razor Production is granted with TS-EN-ISO 9001:2000 QUALITY MANAGEMENT SYSTEMS