Ball Bearings Kit, 698ZZ 608ZZ 628ZZ 6903ZZ 6003ZZ 6203ZZ 36 PCS Double Metal Shielded Deep Groove Bearings Kit for Wheel Skateboards Motor 3D Printing, High Carbon Steel Bearings

I bought these for use in 3d prints, and some small robotics work. They work great, the interior and outside diameters are both pretty accurate and it seems to have a good amount of rotations in it before getting slow or gritty

They are great

My hobby projects often require bearings and I try to keep some bearings on hand, but sometimes I wish I had a different size handy. This set is kind of perfect since I get a decent variety of small bearings for a fraction of what I could pick them up for locally. They seem to be decent quality and they spin smoothly, but I haven't put them in any demanding applications yet.

I used some of these bearings to rebuild the walker that I use when bank fishing. It gives me a seat to sit on, and also a basket under the seat to carry tackle! I also mounted a rod holder on it. It's nice to have extra bearings on hand because with me pushing it around ponds and other fishable spots, the bearings DO get dirty and need to be cleaned or replaced! I tested all the bearings in my kit and all spin just fine...

Decent bearings with variable sizes for many different projects.Case was intact upon arrival and seems to be sturdy enough.

I don't usually mind that most of the "moving" parts of my projects don't actually move, but having been a little boy, I need the wheels to spin. These allow me to make the wheels spin. It is nice to have a variety of different sizes, so I can play around and see what looks cool. I will be keeping these on hand from now on.

Mostly useless sizes.

Okay