Features 1、Wide Compatibility: This hotend extruder kit has strong compatibility and good applicability, suitable for Makerbot 1.75mm filament 3D printers, ensuring seamless integration and upgrading. 2、High Performance: Equipped with 12V 40W NTC heater to prevent frequent combustion and breakage of NTC. 304 stainless steel nozzle, 280℃ high temperature resistance resistor, 12V high speed fan. 3、No Leakage and Blockage: The nozzle is seamlessly connected to the pipe, effectively preventing leakage or blockage of materials during the extrusion process, ensuring the smoothness and continuity of printing. 4、Accurate Control: Using NTC connector with terminal, the design is simple, easy to install and replace, ensuring the accuracy and response speed of temperature control, and maintaining a stable extrusion effect. 5、High Efficiency: This extruder kit has a reasonable design, equipped with heating block, nozzles, and PTFE tube, providing stable and reliable connection, greatly improving printing efficiency and accuracy. Specification Item Type: Hotend Extruder Kit Package List 1 x Main Body 1 x Accessory 1 x Heating Block 1 x PTFE Tube 4 x Nozzles