Review on 💯 PGN 0 1875 Precision Chrome Bearing: Superior Performance for Precise Applications by Stanley Molden

3/16" bearings fit all standard nail polish bottle openings. I like to add thermochromic or photochromic pigments to clear coat and I need to break up clumps with ball bearings - so they are perfect for this use.I would give 5 stars if they came in a resealable package which I think would be more convenient for most users.FYI: Two ball bearings per bottle seems to work fine for me but if you use thicker polish or bigger glitter you could try adding three --- I don't think that would be a problem.