Compatible Models: These nozzles kit is only compatible for Neptune 4 Plus, Neptune 4 Max(NOT for Neptune 4 Pro and Neptune 4) . 10 PCS Nozzles Kit: Nozzles are made of high-quality materials, which has better thermal conductivity and high hardness for better printing. Smooth Inside: Smooth inner wall without burr, minor viscosity coefficient, smoother tapping. Cutting chamfer design, reducing resistance, smooth feeding, barely blocking. Better Compatibility and Applicability: Works with most filament 3d printing materials, such as PLA, ABS, PETG, TPE, TPU, PC, etc. Colour:gold Material:brass Package Contents: 10 x Brass 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.