The Gillette Labs Razor 10-Pack is a set of refill cartridges specifically designed for Gillette razors. Made of stainless steel, these cartridges contain 5 blades each and are suitable for shaving the face. The black cartridges are easy to identify and are perfect for ensuring a smooth and precise shave. With this 10-pack, men can enjoy the convenience of having replacement cartridges on hand for their Gillette razor.