Features: brand new and high quality Material: The extruder is made of metal, it does not need to use V6 heatsink during short-range printing, which saves space and improves heat dissipation efficiency. The printing effect is better than that of plastic materials. Printing high-hardness materials such as carbon fiber is very good. Dual Drive Technology: Feed filament smoothly, highly avoid grinding or slipping. 3:1 Ratio of extruding and higher precision. Application: Filament extrusion, especially for flexible filament. Suitable for Wanhao D9,CR10,Mk3,Ender 3 Pro,for Prusa I3,Anet E10 and more. Whether you require high resolution prints with small nozzles or high-flow prints, for lightning fast retractions in a lightweight and compact package. This gives you the power to adjust according to your preferences and to optimize for the type of material you are using. Specifications: Material: Metal Type:Black-Left/Black-Right/Silver-Left/Silver-Right Size: Approx.16x24 for cm/ 6.3x9.45 inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Dual Gear Extruder