Compatible Printer: Our nozzles are compatible with for 3 3D printer. Material: Hardened nozzles are made of high-quality hardened steel. The nozzle is not easy to stick filament with high hardness, resistant to wear and tear. 0.4MM hardened steel nozzles work with 1.75mm PLA/ABS/PETG/TPU/Wood filament. High Speed: It's a special hardened steel design so the print heats evenly. The interior of the nozzle is smooth without burry, which not only reduces air resistance and prevents the filament from jamming, but supports high-speed printing. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Black Material:Hardened Steel Package Contents: 5 * hardened steel 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.