These Single Edge Blades are perfect for barber razors and replaceable, sliding barber razors. Made of Chromium-Ceramic- Platinum-Tungsten and Polymer Coated Stainless Steel Best for Barbers Shavings and for barber Shops. You Don't Need to Split Double Edge Razor Blades any More, These Blades are Perfectly design for Barbers razors for Wet Shaving and Perfect Single Edge Blades