The stock Duplicator i3 drive gear (the metal gear that is used to push filament through the extruder) is not able to grip filament as well as it should. For some people this is good enough, but for everyone else, we have this improved Drive Gear.
This drive gear is made from high quality stainless steel (compared to brass on the stock drive gear) and have a lot more fine and sharp teeth to better grip the filament.
The drive gear comes with a set screw to easily attach it to the stepper motor.
We can also install the drive gear for you, please contact us for a quote.