Since 1897, one of our primary goals at the Boca Bearing Company has been to maintain the world's largest inventory of miniature bearings in all of the most popular metric and inch sizes. We also have an extensive inventory of special sizes and styles, including hybrids, three-piece thrust, phenolic and plastic-caged bearings. Currently, Boca Bearing Company has over 3,000 different sizes and well over 2 million items in stock.