Feature:1. APPLICABLE MODEL: Assembled hot end kit is suitable for Elegoo for Neptune 4 Plus and for Neptune 4 Maximum 3D printer only2. ALL METAL: The hot end kit is made of excellent alloy throat which can withstand high temperature up to 300 degree celsius, sturdy and long lasting, providing stable print quality3. NOZZLE AND HEAT BLOCK: Seamless connection between the nozzle and the heat breaker, accelerating nozzle heat dissipation and heat breaker insulation, relieving nozzle clogging4. PLUG AND PLAY: Simply replace your extruder with a hot end to get started. Recommend checking the sealing of each part before use. After installing this hot end print head kit, we recommend that you readjust the hot bed for excellent performance5. BRASS NOZZLE: 3D printer extruder hot end kit equipped with brass nozzles, has excellent thermal conductivity, ductility and erosion resistance, you can use with confidenceSpecification:Item Type: Extruder Hot End KitMaterial: Metal, brass, hardened steel.Package List:1 x Hotend Kit2 x Nozzle1 x Blue Tube