Package Includes: This 12PCS nozzles kit contains 6PCS 0.4mm brass nozzles, 3PCS 0.6mm brass nozzles and 3PCS 0.8mm nozzles. Compatible Models: These brass nozzles are compatible with Creality K1, K1 Max, CR-M4, Ender 3 V3 KE, CR-10 SE 3d printers. Smoother Inner Wall, No Clogging: With the Ra Less than 0.4 roughness, inner wall is smooth and free of burrs, making the feeding and filament discharging smoother during the printing process, greatly reducing the probability of clogging. High Quality: Made of durable heat-resistant and wear-resistant brass, long-lasting and not easy to clog, compatible with PLA, ABS, PETG, TPE, TPU,PC and other filament materials. High precision - Made with CNC technology, the surface and inner wall are smooth, the filament output is smooth, and the printed model is more detailed. Colour:gold Material:brass Package Contents: 12x nozzles 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.