Strong thermal conductivity and heat-resistant. Chromium zirconium copper is embedded in the nozzle, providing high thermal conductivity and wear resistance, reducing oxidation at high temperatures for consistent printing performance. Chamfered design helps reduce resistance and improve flow, promoting smoother extrusion and minimizing clogging or adhesion issues. CHT nozzles offer increased flow rate compared to standard nozzles. Replacing a single nozzle can enhance print speed, making it suitable for high-speed 3D printers. Made from high-hardness steel, the nozzle is heat-treated for improved wear resistance, allowing extended use with a variety of filaments, including abrasive materials. Advanced heat treatment enhances durability and corrosion resistance, contributing to a longer service life. Compatible with 1.75mm filament. Specifications: 0.4mm diameter, 6x13mm size, M6 thread. Compatible models: CR-6 SE, Ender-3, Ender-3 Pro, Ender-3 V2, Ender-5, Ender-5 Pro, Ender-5 Plus, CR-10. Color: As shown. Material: Metal. Package includes: 1 x Brass CHT nozzle 0.4mm 1 x Copper-plated CHT nozzle 0.4mm 1 x Hardened Steel CHT nozzle 0.4mm Package contains only the items listed above; other accessories are not included. Note: Lighting and display differences may cause slight color variation between the image and actual item. Measurement tolerance: +/- 1-3cm.