3 Blades...specifically positioned to extend gradually closer to your beard, to shave you progressively closer in a single stroke. So close there is less need to reshave, which means less irritation. Patented DLC (tm) comfort edges...each blade has a patented DLC comfort edge, so Mach3 glides effortlessly and comfortably across your face. All Mach3 cartridges fit all Mach3, Turbo, Power, Venus, Devine handles. Blades are vacuum sealed in easy to open packaging. HANDLE SOLD SEPARATELY