Compatible Models: This Quick-Swap nozzle kit is compatible with for 3 V3, K1C 3d printers and contains 2 x 0.4mm nozzles, 1 x 0.6mm nozzle and 1 x 0.8mm nozzle, 2 x silicone sleeves. Upgraded material: suitable for printing a variety of filaments; the heatbreak is made of titanium alloy, which reduces heat conduction; the nozzle is composed of copper alloy for body and hardened steel for tip, support to print filaments. Precision craftsmanship: tight fit, no leakage, smooth inner walls, no blockage; compatible with for K1C and 3 V3 3D Printer and ceramic heating block Quick-swap Nozzle Kit. High flow: supporting high-speed printing at 600mm/s, enlarged nozzle chamber, achieving a maximum flow rate of up to 30 mm³ Wide Compatibility: The nozzle is composed of copper alloy and hardened steel, supporting the printing of filaments, such as PLA, ABS, PETG, TPU, PP, PC, PLA-, PA-, and PET- Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:As Shown Material:Hardened steel + titanium alloy + chromium zirconium copper Package Contents: 1 * Nozzle Kit for 3D Printer 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.