Phat with a ph,  Sunday, 03 August 2008 CCS said they were abec 7, but whatever. They are super smooth and fast, not to mention the price. They are also supposed to be titanium, but I'm not exactly sure how that's supposed to affect them. Like I wrote earlier, on of them popped a little sooner then I expected or would have hoped, but it still rides just as well as the others, and that was about 4 months ago.