Feature: 1. APPLICABLE MODEL: Assembled hot end kit is suitable for Elegoo for Neptune 4 Plus and for Neptune 4 Maximum 3D printer only 2. 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 quality 3. NOZZLE AND HEAT BLOCK: Seamless connection between the nozzle and the heat breaker, accelerating nozzle heat dissipation and heat breaker insulation, relieving nozzle clogging 4. 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 performance 5. BRASS NOZZLE: 3D printer extruder hot end kit equipped with brass nozzles, has excellent thermal conductivity, ductility and erosion resistance, you can use with confidence Specification: Item Type: Extruder Hot End Kit Material: Metal, brass, hardened steel. Package List: 1 x Hotend Kit 2 x Nozzle 1 x Blue Tube