High-flow hardened steel nozzle suitable for , good insulation/not easy to plug/suitable for high-temperature consumables. Quickly replace the nozzle, the replacement cost is lower, the nozzle part is made of hardened steel, which has high wear resistance and longer service life, and the nozzle can be upgraded and replaced. All-metal design, using three metals: the tip is hardened steel, the inner tube is titanium alloy TC4, and the rest is chromium zirconium copper ( nano coating) material with different thermal conductivity. Reduce the upward conduction of heat at the heating position, dissipate heat to accelerate heat conduction, reach ultra-high temperature, wear and resistance. The inner wall of the nozzle is smooth, burr-free, with a small viscosity coefficient, and smoother wire output. Note: Make sure the hot end has cooled before replacement. Just unscrew the old nozzle with your hand or a wrench and replace it with a new one. Specifications: Product name: High flow hardened steel nozzle for Nozzle specification: 0.4mm Input diameter: 1.75mm Maximum temperature: 300C Color: Picture color Material: Hardened steel + titanium alloy + chrome zirconium copper Package Contents: 1* High flow hardened steel nozzle 1* Silicone ring 1* Nozzle wrench 1* Open end wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.