Our Toughest 3D Printer Nozzle Yet! Our Tungsten Carbide 3D printer nozzle will outlast your 3D printer. Guaranteed! The NozzleONE™ can print carbon fiber and other abrasive materials with ease. We use premium tungsten carbide and a proprietary manufacturing process to guarantee we produce the most advanced nozzle on the market. Unlike our competition, ours are pure tungsten carbide and contain no other materials. Highlights: Abrasion Resistant K20 Grade Tungsten Carbide Highest Thermal Conductivity On The Market Polished Internal Body Tight Hole Tolerance (±0.05mm) Tungsten Carbide is one of the hardest materials on Earth. If you at any point wear out this nozzle we will send you another one for free!