This product is a fully metal hot end replacement kit tailored for the Neptune 4 Plus/4 Max 3D printer. It uses advanced ceramic heating tube technology to achieve rapid and efficient heating, significantly improving printing efficiency and stability. Plug and play design makes installation simple, simply replace the old hot end print head to enjoy brand new printing performance. The complete kit includes necessary components such as brass nozzles and heating blocks, and comes with additional nozzle spare parts to ensure worry free long-term use. High quality alloy material, resistant to high temperatures up to 300 ℃, sturdy and durable, seamless connection design effectively prevents nozzle blockage. Widely compatible with various filaments such as 1.75mm PLA/ABS/PET/TPU/wood, meeting your diverse printing needs. Specially customized for Elegoo Neptune 4 Plus/4 Max, making your 3D printing journey smoother and more efficient!