Compatible models: These nozzle kits are only compatible with the Neptune 4 of the Neptune 4 Pro. 10 nozzle kits: The nozzles are made of high-quality materials with better thermal conductivity and high hardness, allowing for better printing. Internal smoothness: A smooth inner wall without burrs, smaller viscosity coefficient, and smoother knocking. Cutting chamfer design, reducing resistance, smooth feeding, almost no obstruction. Better compatibility and applicability: Used with most FDM printing materials (such as PLA, ABS, PETG, TPE, TPE, TPU, PC). Colour:gold Material:brass Package Contents: 10 x 3D Printer 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.