Shark Double Edge Safety Razor Blades - extremely sharp and give a smooth, close shave which will leave your skin hair-free. The single blade combined with the design of the safety razor helps prevent ingrowing hairs and shaving rash.These razor blades fit all double edge safety razors. They come plastic-free and the actual blades themselves are also recyclable meaning these are kinder to your skin and the environment, not to mention these are much more reasonably priced than those made with plastic!