High-quality brass, high hardness, better wear resistance, good thermal conductivity, improve printing effect. Suitable for most FDM printing materials, such as PLA, ABS, , TPE, TPU, PC, etc. and high temperature filaments, such as , PEKK, PEI, PSU, PPSU, etc. The inner wall is smooth without burrs, the viscosity coefficient is small, the resistance is reduced, and the feeding is smooth. Tight fit, no leakage, the flat surface and tight joint effectively solve the leakage problem. size: about 23 x 6mm Material: brass colour: gold Package Contents: 5 x K1 Nozzles 0.4mm 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.