Materials: The K1/K1 Max/K1C Extruder features a plastic housing with internal metal gears, ensuring durability and enhanced creativity. The upgraded manual filament feeding mechanism allows for smoother filament entry into the printer nozzle, significantly boosting printer performanceDouble Gear Stability: Equipped with a double gear drive system, the Extrusion Kit ensures stable, smooth, and accurate filament feeding without damaging the filament. This design supports consistent and reliable printing resultsEasy Installation: Simplify your upgrade process with our user friendly design that requires no disassembly of the entire extruder kit or rewiring of motors. Simply open the back cover of the Rxtruder to replace parts effortlesslyWide Compatibility: The innovative Printer Extruder is compatible various filaments such as PLA, TPU, PETG, and ABS. Its multi material capability fosters greater creativity in your 3D printing projectsCompact Design: With dimensions of 1.88inchx1.60inchx0.81inch, this Metal Extruder is compact yet powerful, making it an essential upgrade for enhancing your 3D printing experience Specification: 4.78cmx4.06cmx2.07cm/1.88inchx1.60inchx0.81inch Package Includes: 1Metal Extruder Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.