these are the best bearings i have seen come with lubricant and spacers and i love them with my revive skateboard
- ABEC 9**
- Synopsis Ceramics will provide you with the ultimate in smoothness and bearing performance.
- German engineered inner-outer races along with a new and more advanced black ball ceramic formula provides you with a lighter, smoother and faster ride far superior to any other bearings on the market.
**The ABEC scale is an industry accepted standard for the tolerances of a ball bearing. It was developed by the Annular Bearing Engineering Committee (ABEC) of the American Bearing Manufacturers Association (ABMA). There are five classes, going from widest tolerances to tightest: 1, 3, 5, 7, and 9.
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