608 ZZ Ball Bearings(10PCS), 608ZZ Metal Double Shielded Miniature Deep Groove Skateboard Ball Bearings (8mm x 22mm x 7mm)

Good bearing size and durability for hobby projects.

As stated in description

Perfect fit for old 12in Craftsman bandsaw with spares left over.

Not sure what the tolerances of these are supposed to be but of the 10 in the pack the internal diameter varied considerably. 6 of them fitted easily on the posts while the other 4 would not without forcing them. I had no intention of doing this as it would have been a problem removing them. I therefore had to mix some of the old worn bearings with these new ones. very disappointing.

Smooth

I used the bearing in a low load, low speed application, so I can speek to regulat use, but they arrived clean in a sealed pack and are very low friction.

the package was very greasy , so much that it made a mess, you will have to wipe them off or get your hands very greasy.

These bearings work great for what I needed I used them on walkers for seniors

These arent awesome. They worked for what I needed them for (a filament holder for my 3d printer). I didnt need too much spin for that. Then with all the extras my kids thought it would be fun to print a fidget spinner. It doesnt spin well for that. But they did get the job done.

For my Walker