Razor blades are thin, flat pieces of metal designed for shaving or cutting. They are typically made from stainless steel to prevent rust and are often coated for a smoother glide. Razor blades can be used in various types of razors, including safety razors and straight razors, and are essential for achieving a close shave. These blades come in different styles and sharpness levels, catering to various skin types and hair thicknesses. Proper handling and disposal are important for safety, as used blades can be sharp and pose a risk of cuts. Many brands, such as Gillette and Schick, manufacture razor blades for consumer use.