Creality 3D Printer Parts 5PCS Brass Extruder Wheel 40 Teeth Drive Gear for CR-10.CR-10S,S4,S5,Ender 3,Ender 3 Pro,Ender 3 V2

These are a awesome addition to you fdm printer. These wheels will wear and stop pulling the filament to the extruder. Have these on hand as backups. You’ll thank me later

What an improvement. Pics show new one installed next to the old one. Best part is I now have spares in case I ever need to replace this one. Not hard to replace, just check out YouTube videos on replacement.

My step motors cog was worn down and press fit. Ordered a new 40-42 and this set. Completely fixed my issue

Good quality

I got this new extruder for my ender 3 max, old one had worn a groove from filament. So far so good. Easy to install, just remove tension spring for access and turn the gear to access grub screws. Print quality had huge improvements.

Used on CR-10 S5, OEM fit, working great.

Really good drive gear for most printers out there. I like that it has two adjustable screws to keep it in place. It lets me adjust the gear slightly to an unworn spot on the gear as it wears naturally over time.

Without these i would have given up on 3d printing. After switching between many extruders and gears these are by far the best for making sure there is no gear slippage. Make sure though you have the right extruder or it wont fit.

The relatively quick and painless replacement of my Flashforge Adventurer 3s original filament feed gear with this one resulted in a significant reduction the annoying filament slip-related knocking noises that most owners of my printer commonly complain about, and slightly improved print quality. I recommend this upgrade to anyone with a Flashforge A3 and Monoprice Voxel 3D printer. There are a couple easy to follow outube videos that walk you the process.

good product