99 Cent Bearing 10 Packs are the most affordable way to replace stock bearings with high quality standard bearings. Boca's Econo Power 99 Cent Bearings have long been the industry standard for backyard bashers the world over and are supplied in both a Sealed and Shielded version. All Econo Power bearings are packed in grease and will require a short break in period to loosen up. Each kit contains 10 bearings and is available for a limited time only at just 99 cents per bearing!