Feature: 1. Direct extruding kit, smooth feed-in. Equipped with high quality stepper motor, reducing the possibility of nozzle blockage. 2. All metal structure, durable and wear resistant. Full assembled, easy to install. 3. Compatible with more types of filament when printing under high temperature, like flexible TPU. 4. Includes a 0.4 nozzle, 2 cooling fans, a backplate, a stepper motor, etc. 5. A great accessory for Ender-3 Series 3D Printer. Specification: Features: Direct extruding kit, smooth feed-in. Equipped with high quality stepper motor, reducing the possibility of nozzle blockage. All metal structure, durable and wear resistant. Full assembled, easy to install. Compatible with more types of filament when printing under high temperature, like flexible TPU. Includes a 0.4 nozzle, 2 cooling fans, a backplate, a stepper motor, etc. A great accessory for Ender-3 Series 3D Printer. Specifications: Material: Aluminum Alloy Nozzle Diameter: 0.4mm Print Precise: ±0.1mm Output Voltage: 24V Rated Voltage: AC 115V/230V, 50/60Hz Applicable Models: Ender-3 Series 3D Printer Item Size: 7.6 * 9.6 * 12.5cm/ 3.0 * 3.8 * 4.9oz Item Weight: 379g/ 13.4oz Package Size: 20 * 15 * 8cm/ 7.9 * 5.9 * 3.1oz Package Weight: 620g/ 21.9oz Packing List: 1 * Direct Extruding Kit Package List: 1 * Direct Extruding Kit