About the product: 1. Name: High-flow hardened steel nozzle   2. Function:   *Good insulation, not easy to plug, suitable for high-temperature consumables   *Quickly replace the hot end, the nozzle can be upgraded and replaced   *Use three kinds of metals: the tip is hardened steel, the inner tube is titanium alloy TC4, and the rest is chromium zirconium copper (DLC nano coating) material with different thermal conductivity.   *Rapid heating and efficient heat dissipation   *Maximum temperature 300℃