Features:Original aluminum driver for Creality 3D printer CR-10 series, CR-10 S4, CR-10 S5, CR-10 Mini, CR-10S, CR-10 Plus.Stable and durable: DIY kits, you need to assemble yourself. Our kit includes all the necessary screws and parts needed to directly replace the old original weak extruder.Easy to install: All you have to do is unplug the original for Creality extruder and screw from the new Metal Extruder and get ready to start printing.For the 1.75mm long 3D printer MK8 for Bowden extruder frame.The advantage of a metal extruder is that you can push better pressure into the printer nozzles to improve printer performance. Our extruder kit has an adjustable bolt so you can adjust the pressure of the extruder gear as needed.This modified MK8 extruder features a filament guide tube, all screws, spare drive gear and an upgraded for Bowden fitting for CR-10 3D printers.Specification:Material: AluminumColor: RedPackage weight: approx. 66 gPackage list:1 * Extruders Kit4 * Spray Nozzle