In the words of Tilt Scooters:
"The myth of Abec ratings should be dead, and here's a bearing with the guts to prove it. A quality rubber seal helps prevent dirt and moisture from entering the bearing. Light grease in place of industry standard oil provides long-term lubrication. The same precision chrome steel spacers are durable and will not compress under high loads, helping wheels stay dialed by preventing bearings from seizing.
These bearings don't say Abec, and we don't want them to. We want a fast, quality bearing that doesn't get crunchy with age. We want a Better Bearing."
Sold in kits including four bearings and two spacers.