[High-quality Materials]: The shell of K1 extruder is made of high-quality plastic, and the extruded gears inside are made of metal material, which is sturdy and , achieving better creativity. he advantages of our extruder drive is upgraded K1 extruder manual consumable feed pushing the filament into the printer nozzle and so will improve on the printers' performance. [Dual Gear for Stable Printing]: The K1 extruder with dual gear drive does not damage the filament, supports stable, smooth and precise filament feeding. [Easy to Install]: There is no need to dismantle the entire extrusion mechanism kit and reinstall the motor wire. After opening the back cover of the extruder, you only need to replace the extrusion part. [Wide Compatibility]: K1/K1C/K1Max Extruder works well with different filaments like PLA/TPU/PETG/ABS etc. Multi-material capability enjoys more creativity. Colour:As Shown Material:Metal Package Contents: 1 * Upgraded K1 Extruder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.