Compatible Models: These nozzles are compatible with Neptune 4 Plus and Neptune 4 Max only (not compatible with Neptune 4 or Neptune 4 Pro). Package Includes: 22 pcs brass nozzles (10 pcs 0.4mm, 3 pcs 0.2mm, 3 pcs 0.6mm, 3 pcs 0.8mm, 3 pcs 1.0mm). High Temperature Resistance and Good Thermal Conductivity: Inner wall surface roughness Ra less than 0.4, reducing clogging, with high temperature resistance, fast heat transfer, and stable printing performance. Smooth Inner Wall Without Burrs and Smooth Extrusion: Enhanced inner wall improves filament flow, offers low viscosity coefficient, resists clogging, and ensures smooth extrusion. Better Compatibility and Applicability: Compatible with most FDM printing materials such as PLA, ABS, PETG, TPE, TPU, PC, and more. Color: Gold Material: Brass Package Contents: 22 x Brass Nozzles (10 pcs 0.4mm, 3 pcs 0.2mm, 3 pcs 0.6mm, 3 pcs 0.8mm, 3 pcs 1.0mm) Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3 cm.