The GENUINE Creality K1/K1 Max/K1C Extruder is an upgraded extrusion unit that is compatible with multiple filaments such as PLA, TPU, PETG, and ABS. Made of durable plastic, this black extruder assembly features a dual-gear direct drive system for efficient heat dissipation and low noise operation. With easy installation and a compact size of 4.49 x 3.23 x 2.64 inches, this Creality product is a reliable choice for 3D printer enthusiasts looking to enhance their printing experience with high-quality extrusion capabilities.