The Better Bearing Kit is everything you need to replace the bearings in a set of wheels. 4 bearings and two high quality spacers. A quality rubber seal helps prevent dirt and moisture from entering the bearing. Light grease instead of oil provides long-term lubrication. The precision chrome steel spacers are durable and will not compress like a cheep aluminum spacer, helping your wheels stay dialed by help preventing bearings from breaking or seizing.
These bearings don't say Abec, and Tilt doesn't want them to. If you want a fast, quality bearings, buy the Better Bearing Kit.