Feather-light and ultra-sharp, Shark Superior Platinum Double Edge Razor Blades offer an unbeatable shave. The blades fit all double edge safety razors. As such they offer tremendous value when placed alongside cartridge blades and razors, delivering the same quality at a fraction of the cost. These blades are also recyclable & contain no plastic like their more expensive counterparts. Kinder to your skin, wallet & the environment.