Swordfish 31311 Precision Bearing Variety Pack for Online Search Review

As far as sizing goes, it looks like they used a sieve to sort the ball sizes. Each size set is somewhere between the listed size and the next size up. The tolerances are large enough to be seen. There were differences of a few hundredths at each size. Not suitable for storage.

A good value set of chrome steel ball bearings. I only needed 6 but wasn't sure which size to order so I would have spent more than this set just to order 3 sizes individually so this set was a better deal. Now I have plenty of spare bearings for future projects!

I needed a 2mm to 3mm ball bearing to fit a pair of Black and Decker screwdrivers but couldn't figure out the exact size. Instead of guessing, I bought this set because they came in a lot of different sizes. As it turned out I needed two different size bearings (2.5 and 3) so this kit satisfied me. And now I have backup for the future. Very happy.