5 Blade Shaving Surface + 1 Precision Trimmer™ The Comfort of 5. The Precision of 1.™ 5 Blade Shaving Surface™ Technology. . . has 5 blades spaced closer together to help reduce pressure - for less irritation and more comfort. 1 Precision Trimmer™ Blade. . . built into the back of the cartridge. Perfect for tricky places like sideburns, under the nose, and around facial hair. All Fusion Cartridges can be used with all Fusion Razors