Description:Double gear extrusion mechanism has high extrusion force, ensuring smooth feeding.A premium upgrade kit for Ender-3 Btech printer, this quickly and easily installed collection of tried and tested upgrades improve the performance and reliability for Ender-3 Btech printer.Made of high quality aluminium alloy material, the dual drive extruder can be self-assembly and DIY.Thare is one size, the extruder length is 4.2cm, the extruder width is 2cm, the extruder height is 2.35cm.The original aluminium alloy driver is stable and durable, better pressure pushes the filament into the printer nozzle, and suits for Ender-3/Ender 3pro/Ender 5/Tornado.Item Name: Dual Gear ExtruderMaterial:Aluminum AlloyDirectivity: Right HandSize:4.2cmx2cmx2.35cm/1.65inx0.79inx0.93inNotes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:13 X Dual Gear Extruder Accessories