Feature:1. Double gear extrusion mechanism, strong extrusion force, smooth feeding.2. Suitable for Creality 3D Printer Ender 3/Ender 3 Pro/CR-10/CR-10S/CR-10S Pro, etc.3. Used for 1.75mm filament. Improves printer performance.4. Aluminum alloy material, stable and durable.5. DIY aluminum block, need to assembly by yourself.Specification:Features:Double gear extrusion mechanism, strong extrusion force, smooth feeding.Suitable for Creality 3D Printer Ender 3/Ender 3 Pro/CR-10/CR-10S/CR-10S Pro, etc.Used for 1.75mm filament. Improves printer performance.Aluminum alloy material, stable and durable.DIY aluminum block, need to assembly by yourself.Specifications:Color: RedMaterial: Aluminum AlloyPackage Size: 11.5 * 8.0 * 3.0cm / 4.5 * 3.1 * 1.2inPackage Weight: 74g / 2.6ozPackage List:1 * Dual Drive Extruder KitPackage List:1 * Dual Drive Extruder Kit