The 18 MM ROK Black Blade HD Utility Knife combines strength and precision for demanding cutting tasks. Its rust-proof black blade boasts up to 25% increased hardness and a double-honed edge for exceptional sharpness. Designed with an ergonomic polycarbonate handle, it ensures a secure, comfortable grip during use. A thick blade holder enhances durability, while the safety lock mechanism keeps the blade firmly in place for added protection. Ideal for cutting cardboard, carpet, leather, and rope, this utility knife is built to last. Replacement blades are also available for continued reliable performance.