This is a brass plated wear resistant nozzle for Flashforge Creator Pro 3. The nozzle is made from a 360 brass base material and plated with TwinClad XT coating. TwinClad XT is a nickel composite coating designed for very low friction. It offers one of the lowest coefficients of friction, better than nickel with PTFE co-deposition. The TwinClad XT coating is also very hard and abrasion resistant. If you are working with abrasive carbon fiber, stainless steel, wood filled, or any other metal filled filaments, this will greatly increase the lifespan of your nozzle.