Broad Compatibility: These nozzles are compatible with Neptune 4 Series 3D printers, offering a hassle-free replacement solution for your worn-out or clogged nozzles. Precise and Smooth Printing: The interior surfaces of these nozzles are polished to perfection. The low adhesive coefficient ensures smooth filament flow. Their unique chamfered design reduces resistance, enabling consistent and stable temperature control during printing, resulting in even material distribution. High-Quality Materials: Crafted from premium brass materials, these nozzles offer stability, durability, and excellent wear and corrosion resistance. These materials a longer lifespan for your nozzles, allowing for efficient and consistent 3D printing. Prevents Leaks: 3D printing is all about precision, and these nozzles help you maintain that precision. Their design minimizes the risk of leaks and ensures that you achieve a consistent, glossy, and polished finish on your printed objects. The rounded edges of the nozzles reduce resistance, preventing clogs. You'll have all the you need for your 3D printing projects. quantity:15PCS Colour:As Shown Material:Metal Package Contents: 1 set x 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.