Performance remains identical across models. The key distinction lies in the nozzle tip: Hardened Steel + DLC Gold Finish Hardened Steel Nozzle Tip with DLC Coating: The nozzle head is crafted from hardened steel and treated with diamond-like carbon (DLC) coating. This enhances the nozzle's hardness and wear resistance, particularly when printing abrasive carbon fiber materials. The gold color facilitates easier inspection of nozzle wear and simplifies maintenance checks. Main image: Chrome-zirconium copper processing. Withstands temperatures up to 500°C. The dual-material structure combines both materials, resulting in superior wear resistance and thermal conductivity compared to all-hardened steel designs.