BIQU Extruder Pulley 36Teeth Bore 5mm Stainless Steel Drive Gear for 1.75mm & 3mm 3D Printer Filament (Pack of 5pcs)

Perfect fit!

Super upgrade over the brass ones on the Ender 3

Perfect upgrade for extruder gears, used in both direct drive and Bowden configurations and works perfectly and cheaper than most, definitely a win.

Perfect replacement for sender 3v2. Old brass piece was worn out from clogs but this get it back up and going in no time. Will need to adjust esteps.

Set screw takes a metric 1.5 hex wrench which is very small, and the average person wont have. The teeth are the same diameter as the original gear on my MK10 extruder. I did not have to adjust extrusion multiplier when switching over. Teeth dulled enough within 8 hours to start causing print failures. (Filament was highly abrasive carbon fiber reinforced type). Easy to slide the gear in or out on the drive shaft for fresh teeth, but cannot recommend this for use with abrasive filaments). Should work wonderfully for everything else.

On my Creality Ender 3 the brass stock gear rounded over and Im only printing in PLA. This solved my issue. I had to turn up my flow in Cura to 103% to get good extrusion.

Review.

Works well

Better than OEM.

Dropped right in, and did not need to recalibrate my e-steps. Good price, and quality.