• Creality 100% official extrusion kit K1/K1 Max with motor. The K1 extruder housing is made of high-quality plastic, and the extruded gears inside are made of metallic material, which is strong and durable. • The stepper motor fits perfectly with the high-strength synchronous wheel, achieving a precise constant ratio, smooth rotation, and high transmission efficiency. • High speed and smooth feeding: the dual-drive direct extruder does not damage the filament, supports stable, smooth, and precise filament feeding. • Creality K1/K1 Max Extruder works well with different filaments such as PLA/TPU/PETG/ABS, etc. • K1 Max Extruder K1 Extruder