K1 extruder housing is made of plastic and the internal extrusion gears are made of metal, making them robust and for better creativity. High speed and smooth feeding: Double gear direct extruder does not damage the filament and supports stable, smooth and precise filament feeding. Wide range of compatibility - Compatible with for K1/ K1 MAX/k1c 3D machines, also works with a wide range of filaments such as PLA/PLA+//TPU/PETG/ABS 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 Color:Black Material:Metal+Plastic Package Contents: 1 * Extruder Kit 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.