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

Working well so far. Ran a kilo of carbon fiber through so far without issue. Do wish they had two grub screws instead of just one.

Always had problems with my ender 3 with under extrusion with certain filament brands at normal temps. Work around was to increase temp which caused stringing or blobs till I found these steel gears for the extruder. Made a difference reminds me of the original ones you find on a wanhao i3. Must buy for Ender 3.

These are *much* better than the soft brass drive gears many 3D printers come with. After a couple of clogged nozzle issues my Ender3 was not feeding correctly due to the brass gear wearing down a bit, replaced it with these and have not had the slightest issue. Great upgrade.

Worked great.

Filament is the natural prey of a 3d printer, and a printer with a brass feed gear will inevitably starve to death as the teeth wear down, I refit mine with these stainless steel gears, which contain many more teeth and grip better than the standard brass ones. Now the filament in my boxes tremble in fear at the newly terrifying maw of my printers.

I ordered these to swap out the stock grear from my Ender 3 and they seem to be a good value upgrade. They are all well machined and have two grub screws. These are a bit more aggressive than the stock gear but thats what I was looking for.

Switched my worn Ender-3 brass extruder gear with this one. Size was so close that I didnt bother with E-step calibration. Working great.

replaced the brass gears that keep wearing down..these should come stock with the printers

Good gear, ID is 5.04mm, OD is 10.95mm. Seems to be really good quality and will last a long time extruding pla and petg.

Works very well, definitely an upgrade from the brass. And fits my JG Maker Magic printer.