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℃