Specifications: Main Material: Aluminum/steel Nozzle Size: 0.4mm Adaptation Consumables: 1.75mm filament Applicable Models: For Creality Ender 3, Ender 3 Pro, Ender 3 V2Package List: 1 * Extruder drive feed kit 1 * Connecting cable 1 * Wiring diagram instruction Intallation tools and accessoriesAfter sale service and technical support If you have any issue, please kindly contact us. We will reply as soon as possible within 24 hours. We will offer you professional customer support and strive our best to offer your solutions.