Review on 500Pcs Precision Stainless Steel Uxcell Bearing by Eddie Gordon

They are non-magnetic and microscopic. Essentially, you're paying for an empty envelope. Get the big ones if you need magnetic balls. That's not it. I noticed that the description has changed since I ordered it. It used to be called magnetic balls, now it's called ball bearings. Well that's nice to know that I have these things now. It also says 500. I had about 20. I ordered two packs.