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

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

perfect last Way longer than the brass ones buy one pack and they will last a long time

Actually Im testing in my CR-10, in this short time I dont have any problem

Worked good on my cr-10s

Super upgrade over the brass ones on the Ender 3

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.

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.

Using this drive gear to grip a brass rod. Nice. Set screws hold tight on extruder shaft. Used a standard allan wrench. Its loose in hex socket, too much force will round the hex.

These are nice fit my ender 3. I do recommend adding some loctite to the set scew or it will come loose everytime

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.