Single Edge - Ultra Sharp Chromium - Ceramic - Platinum - Tungsten and Polymer Coated Edges From beginning to end, all Derby Razor Blades are subjected to severe Quality Control Inspection at every stage of manufacturing process by utilization of unique quality control equipment.These high quality interchangeable razor blades are made from refined and intensively processed Swedish carbon steel.The razors are especially suitable for sensitive to normal skin and light to heavy beard growth. Derby Premium Single Edge Razor Blades The razors are especially suitable for sensitive to normal skin and light to heavy beard growth. Derby half or single edge blades are manufactured in Turkey. The razor blades are produced from Swedish steel with a high carbon content. Within strict quality standards, the blades are coated with platinum, chrome, polymer, tungsten and ceramic. Why single edge blade? In order to facilitate the work of shaving lovers and our users who do shaving as a profession, it is designed for direct use without any breaking, unlike double edge blades. Is there a material difference with double edge razors? No. Derby half or single edge knives are produced in Turkey. The razor blades are made of Swedish steel with a high carbon content. The razor blades are particularly suitable for sensitive to normal skin and for mild to heavy beard growth. Other Derby Razor Blades; 1000 Derby Professional 100 Derby Extra Derby Shaving Sets Single Edge Razor Blades Each pack contains 100 blades that fit directly into any cut throat shaver. Double Edge Razor Blades Highest quality blades made to fit different double edge safety razors Safety Razor Blades The edges of the blade are coated with chrome-séramique No need to break the blades Its cutting edges are coated with chrome-ceramic, tungsten and platinum. Made of Swedish Steel 100 blades come in this package Packed in softbox Derby shaving sets from the shave factory