Check the listing for details. Derby Premium Single Edge Razor Blades 100ct. Condition: New. Listed at 7.80 USD. Blade Type: Single Edge Coating: Chromium-Ceramic-Platinum-Tungsten and Polymer Country: Turkey Manufacturer: Derby Highest quality blades made to fit different straight razors Each blade is individually wax paper wrapped Each packet includes 100 single edge blades Ideal for: Men Description: Derby razor blades are made in turkey from stainless razor blade steel strip from sweden. Derby razor blades are perforated, hardened and ground by utilizing most advanced equipment. The cutting edges are deposited with chromium, ceramic, tungsten and platinum by advanced spluttering equipment for optimum edge strenght thus longer shaving life. Derby blades are coated with a polymer for optimum shaving comfort. From beginning to end, all derby blades are subjected to severe quality control inspection at every stage of manufacturing processes by utilization of unique quality control equipment. Directions: Apply on face and neck and shave. Rinse with water.