Description: A premium upgrade kit for your Ender 3 printer, this quickly and easily installed collection of tried and tested upgrades improve the performance and reliability for your Ender 3 printer. This modified MK8 Extruder has a filament guide tube, all screws, spare drive gear, and upgraded tube fitting, for CR-10 3D Printer. Support for flexibles from the intake and output ends. Aaluminum alloy driver feed for CR-10/CR-10S/CR-8/CR-7, it is stableand durable. Full metal aluminum alloy,diy aluminum block, need to assemble by yourself With better stronger pressure pushing the filament into the printer nozzle Easy to install: All you do is unbolt the extruder & screw in the new "Metal Extruder" and ready to start printing. Used for 1.75mm filament of 3D printer MK8 bowden extruder frame. Specification: Color: Red For To: CR-7/CR-8/ CR-10/CR-10S Filament : 1.75mm Package Includes: 1x Red Extruder Kit (Right)