The Gold bi-metal utility blade features a titanium nitride coated edge, which offers up to five times life when compared to standard carbon steel blades. The blade is complemented with the company's Gold utility knife, which has a patented titanium-coated stainless steel nose that performs strongly in abusive work situations. The cutting edge of bi-metal utility blades gets its gold color from a patented coating process called physical vapor deposition. Drywallers, insulation installers, roofing and floor installers are faced with fewer blade changes during a normal workday, resulting in increased productivity, less risk of injury due to broken blades and lower costs per cut.