1. Wear resistance, high temperature resistance, and high hardness 2. Using a combination of hardened steel and chromium zirconium copper, it has better thermal conductivity than normal hardened steel nozzles 3. Using a three hole device can increase the flow rate of consumables during printing and improve printing speed Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Printing consumables: PLA, ABS, PETG, TPU, PA, PC, NYLON, etc.. The inner wall of throat nozzle is smooth, reducing plug and improving printing accuracy. Colour:black Material:hardened steel Size:0.4mm Package Contents: 3 x CHT Clone 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.