they are abec 3 if they are element thriftwood black bearings then they are abec 7, just so you know the abec rating has nothing to do with how a skateboard bearing will be, it's not a rating for skate bearings it's only for the manufacture to use, abec 3's can be better than abec 7's and in many cases i've had them be. Swiss is the only skate rating that is accurate. Any bearing can be a good quality bearing if they are keeped up with lube and a cleaning every now and then they last longer. SOme bearings take a while to break in so if you get a new set don't get mad if they don't roll smooth right away, i've had it take a couple months to break in a set of bearings before with constant skating all day long. The blacks look like a better bearing all together over the regular ones.
17 years skateboarding