- High quality and durable performance.For all 1.75 mm filament- Easy to install: all you have to do is the original extruder and screw from the new "metal extruder" and get ready to start printing. Used for 1.75mm long 3D printer MK8 Bowden extruder rack.Mounting screwsBushing- Use simple convenient.- Original aluminium actuator for 3D printer cr-10 series, cr-10 S4, cr-10 , cr-10 Mini, cr-10 s, cr-10 Plus.- Advantages of metal extruder: Better pressure can be into the printer nozzle to improve the performance of the printer.- 100% new and in good condition.Color: RedThe improved MK8 extruder has a filament guide , all screws, spare drive gear and upgraded Bowden pipe connector for cr-10 3D printers.- Stability and durability: DIY kit, you need to assemble it yourself. Our kit includes all the necessary screws and parts needed to replace the old weak extruder directly.Material: AluminumSpringOur extruder kit has an adjustable so that you can adjust the pressure of the extruder gear as needed.Special Bowden fitting ( great improvement over Condition: 100% Brand NewBrass extruder drive gearAluminum MK8 extruder frame, with bored intake holeOur design provides full support for the elastic parts from the inlet and . We have reduced the and complexity of flexible printing. It also makes printing faster, longer, and risk-. Frankly, it looks great and performs better than the plastic version included in the stock printer. It allows you to print elastic materials and regular plastic filaments.