The gray metal extruder is an original upgrade replacement part for Ender 3, Ender 3 Pro,Ender 5,CR-10, CR-10S, CR-10 S4, CR-10 S5, CR-10 Mini, CR-10S, CR-10 Plus.
Works better than original plastic stock extruder, make loading filament much easier. Even smoother than the red metal extruder.
Compatible with PLA/ABS/Wood/TPU/PTEG, 40 Teeth drive gear feeds the 1.75mm filament very smoothy.
Easy to Install. The extruder diy kit comes with a instruction on how to put it together, which makes it more easy to install.
100% brand new and original Creality exturder. If you have any question, please let us know.