Check the listing for details. Derby Professional Single Edge Razor Blades, 100 Count X2 - 2 Pack. Condition: New. Listed at 13.49 USD. Next page Derby ProfessionalSingle Edge Razor Blades for straight razorCutting-edge spluttering equipment coat the edges of each blade in chromium-ceramic tungsten and platinum for a truly unmatched shave every time.Double edged blades are increasingly only used to be split in half. These single edged razors are made specifically for such shaving utensils and each are individually wrapped in wax paper to maintain excellence and sharpness.Play VideoDerby Professional Single Edge BladesEach pack contains 100 blades that fit directly into any cut throat shaver - no need to break the blades. The cutting edges of the blades are coated with chrome-ceramic, tungsten and platinum and coated with a polymer for optimum shaving comfort. Suitable for all throat / shaver type shavers, including shaving factory, dovo, focus, parker.