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

As stated in description

They fit perfectly and smooth operation

We have some bicycle wind spinners that were worn out from all the wind where we live. My husband replaced the ball bearings , they are all spinning away again.

I mainly used mine for a spool holder. For price, quality and quantity, cant complain. I measured with my caliper and everything was within spec for my scenarios.

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.

woodworking

Used it in a fan for air conditioner.

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 were used to replace bearings on a wheel on a rollator.

Good bearing size and durability for hobby projects.