Designed for Creality Printers: These copper alloy nozzles are made specifically for Ender 5 S1, Ender 3 V3 SE, Ender 7, and are compatible with Spider 1.0 hot end kits. They will not fit other hot end kits, ensuring a perfect fit and optimal performance for your specific printer model. Enhanced Thermal Conductivity: Made from copper alloy, these nozzles have excellent thermal conductivity, ensuring even heating. This feature facilitates smoother extrusion and enhances the structural strength of inter-layer bonding, significantly improving overall print quality. High-Temperature Filament Printing: Capable of handling softening temperatures up to 500℃, these nozzles are engineered to meet the rapid heating needs of continuous high-temperature filament printing. This feature extends the life of the nozzle while maintaining consistent print quality. Wide Compatibility with Printing Materials: These nozzles are compatible with a wide range of printing materials, including PLA, ABS, PETG, TPE, TPU, PC, and high-temperature filaments such as PEEK, PEKK, PEI, PSU, PPSU. This versatility makes them suitable for a wide range of printing projects and needs. Comprehensive package contents: Each package includes six nozzles, three in size 0.4 mm and three in size 0.6 mm. This set of equipment provides the flexibility to print different resolutions and details, meeting both fine and faster printing requirements. Colour:As Shown Material:Chrome Zirconium Copper Package Contents: 3 * K1 chrome zirconium copper nozzle 0.4MM 3 * K1 chrome zirconium copper nozzle 0.6MM