uxcell 683ZZ Ball Bearing 3mm x 7mm x 3mm Double Shielded Deep Groove Bearings, Carbon Steel 20pcs

These bearings are perfect for small DIY builds and work smoothly right out of the pack. I used them in a 3D-printed trebuchet model, and they performed flawlessly. Easy to work with, good quality, and ideal for hobby projects.

Great product

Needed these for a small project. the 20 pack was inexpensive and they worked great!

Works good for the price but they came with thick grease or something smeared inside. They don't spin good because of it until you oil them good then they are ok for the price

Very good bearings, used them for my ACE Pro Filament holder. not a bad buy and would recommend

I bought these not paying attention to the size measurements. I've since used them in other projects and they work great, but I was surprised when I saw how tiny they are!

Just keep in mind that ZZ are non-servicable, so if you're unhappy with the lubricant on them, you'll be converting them to 'open' bearings to clean/reapply

Works as advertised

Parfait ce sont des berring fort pas de la crap

The ID of the bearings were quite a bit under 3mm so it wouldn't fit on the shaft I had without excessive force.

Very fragile bearings, they do not run smooth and can feel them grabbing when they turn. most were off-centered (see attached picture) and some had a lip in the bore, preventing a 3mm shaft from going through. These are good if you want to piss someone off and see their project fail.