Welcome to our store! 1, WIDE COMPATIBILITY: Compatible with popular DIY 3D printers such as for CR10, for Ender, for D9, for Anet E10, Et4, for Geeetech, for Mizar S, for Cr10S Prusa I3 and for Ender 3 Pro, making the extruder suitable for most printers on the market. 2、HIGH PRECISION & EXCELLENT PERFORMANCE: Equipped with high-precision CNC hardened steel internal parts, ensuring smooth filament feeding and optimal performance during printing. 3、VERSATILE COMPATIBILITY: Works with all open-source 3D printers that use 1.75mm diameter filament, providing strong compatibility with a wide range of materials. 4、3:1 GEAR RATIO & DOUBLE GEAR REDUCTION MECHANISM: Features a 3:1 gear ratio and double gear reduction mechanism, delivering stable filament feeding without slipping and providing greater torque for extrusion. 5、ADJUSTABLE SPRING MECHANISM: Allows users to fine-tune the pressure exerted by the dual drive wheels on the filament, making it easier to switch between different materials and ensuring optimal extrusion. 6, TRANSPARENT DESIGN: The transparent material allows users to better observe the extrusion process, ensuring smooth operation and identifying any potential problems, especially with flexible materials like TPU. Item Type: Dual Drive Gear Extruder Material: Metal, high-density engineering plastic 1 x extruder 1 x extruder wheel 1 x electric frame 1 x pneumatic quick-release coupling 2 x hex wrench 3 x M3 x 35 screws 1 x Tighten adjustment screws 1 x 2 x 4 x 100 mm PTFE tube 1 x spring 1 x washer 1 x hook 1 x manual Customers are our top priority. If you find any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.