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

Brass drive gear had worn out and was slipping. Filament would not feed. The steel gear made my extruder work again. I hope steel last longer than brass.

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.

These are exactly what I needed and they work great

These work great in my ender 3

I used this as a last ditch attempt to fix the extrusion on my Tronxy P802m. it fixed the extrusion problems and now i get perfect prints every time! i will be ordering again when i need more!

I like these a lot better than the brass ones that the Ender 3 comes with. They seem a lot more durable and grip pretty well. I dont think Ill have to replace one of these for a long time.

Seem solid and work great in my mk8 extruder.

Fixed my Maker select V2 with these, dont know if these match the factory gear as I dont think mine had a factory gear in it when it failed. But it matched whatever mine had. Only critique is that the gears seemed like they got banged around in transit so there were some light existing marked/gouges on them. I suspect its not an issue, I just used the one with the least and it worked great.

Worked good on my cr-10s

I got some of these to go with a metal extruder for my Ender 3. Theyre probably strong enough to drag a refrigerator down a hallway. Get some. Throw your brass in the trash.