Gillette Labs Men's Razor Blades Refills / Cartridges, 4 Count The GilletteLabs universal blade refill cartridge by Gillette can be used with all GilletteLabs razors. GilletteLab's razors include the world's first razor with an exfoliating bar, GilletteLabs with Exfoliating Bar, for effortless shaving and exfoliation in one stroke, and the world's first Heated Razor, for delivering soothing warmth and the feeling of a hot towel barber spa shave. This innovative razor blade refill features five of Gillette's best blades for a shave that is close and comfortable. The razor blade refill cartridge has an opening in the middle where the heated bar and the exfoliating bar on the razor handle fits and snaps into place with a satisfying "click." This universal blade refill cartridge makes it easy to swap in fresh blades, no matter what GilletteLabs razor you prefer to use every day. The GilletteLabs with Exfoliating Bar and GilletteLabs Heated Razor make great gift sets for men, especially when paired with an extra set of blade refills.