Derby Professional PREMIUMSingle Edge Razor BladesEach pack contains 100 individually wrapped blades. Choose how many packs you want from the drop downNew and Improved:- made from Swedish Steel,  with improved coating technologySingle Edge:- fits all type of straight (cut throat) razors, used by professionals and home users alike. Made in Turkey:- All Derby Razor Blades are subjected to strict Quality Control inspection, and are granted with TS-EN-ISO 9001:2000 Quality Management Systems.