This extruder kit is an original replacement part for the Neptune 4 Plus and Neptune 4 Max 3D printers from Elegoo. The kit contains all essential parts for a dual-gear direct extruder setup. You will receive a hotend kit, with an extended hotend, PTFE tube and a titanium hotend throat. This kit can handle temperatures up to 300˚C, allowing you to print with a wide variety of filaments. The extended hotend throat has a 60W ceramic heating element and a copper heating block, allowing filament to be melted quickly even during high-speed printing. The 5.2:1 reduction ratio and stainless steel dual-gear gears ensure a firm grip, ensuring even filament feed and preventing flexible filament from getting stuck. To prevent heat-related issues, the kit comes with 2 x 4015 double-sided cooling fans. This ensures consistent print quality.