Review on WINSINN Dual Gear Extruder, Compatible With Ender 3 CR10 CR-10 Pro CR-10S Tornado Upgraded Aluminum Drive Feed For 3D Printer 1.75Mm Filament (Dual Connector) by Brian Faxon

This works, but as you can see in the photos, the parts I received did not actually fit my printer, the thickness of the base prevented the parts from fitting- fortunately I have the toolsto fix this sort of manufacturing mistake and the rest worked.

I have done only limited printing since installing, enough to both confirm that it works, and that there is some marginal difference in extrusion that seems to lend to layer separation in some of my prints, but this is without yet changing the settings as recommended by the manufacturer to test again. I think I may also increase extruder and bed temperatures slightly on my machine to