metal, this adjusted lever set ensures durability and longevity, perfectly suitable for 8504 / models This metal set resists deformation under pressure, ideal for both professional barbers and home users for a smooth touches and anti slip grip to fit personally styles or device aesthetics Perfect for salons, barbershops, and personally grooming, upgrading your ' s control and comfort for effortless styling Features an ergonomic design, allowing and accurate trimming for various hairstyles