### Manual Multi-Color Printing Solution Switch between two different filaments manually to achieve dual-color printing with a single extruder, no complex multi-color upgrade required. ### Low-Friction Feeder Mechanism Built-in rolling design reduces filament resistance, ensuring smooth feeding and preventing jams even with flexible materials like TPU. ### Universal 1.75mm Filament Compatibility Works with all standard 1.75mm 3D printer filaments, including PLA, ABS, PETG, TPU, and composite materials. ### 2-to-1 Y-Splitter Included Comes with a 3-way diverter to combine two filaments into one PTFE tube, compatible with all Bowden-style extruders. ### Easy Installation & Operation Simple structure with quick-connect fittings, no soldering or firmware changes needed, ideal for hobbyists and makers.