The Gillette Labs universal blade refill cartridge by Gillette can be used with all Gillette Labs razors. Gillette Lab s men s razors include the world s first razor with exfoliating technology built into the handle for a shave as quick and easy as washing your face and the world s first Heated Razor for soothing warmth and feeling of a hot towel barber shave. This innovative razor blade refill features Gillette s best razor blades for a shave that is close and comfortable. The razor blade refill cartridge has an opening in the middle where the exfoliating bar and the heated bar on the razor handle fit and snap into place with an easy click . This universal blade refill cartridge makes it simple to swap in fresh blades no matter what Gillette Labs razor you prefer to use. The Gillette Labs with Exfoliating Bar and Gillette Labs Heated Razor make great gift sets for men especially when paired with an extra set of blade refills.