I met a guy lurking outside of the Street League contest in Portland.he said he could show me something I hadn’t seen before. I told him “Not, here. Not now, especially with my kids present.” No, no… I took a glance and said “I don’t know man, I’ve seen hubcaps on skateboards before.” But then I took a closer look, and he explained that these were bearing covers. If you look closely, you can see that these are indeed unlike any other bearing cover that you’ve seen. I’m still unclear as to whether Sk8rNutz are a complete assembly that include the bearings, but they are definitely more useful than Sk8nutz. Sk8rNutz vs. Sk8Nutz, a subtle distinction in product names, but not in product. If you are going to spend a hundred dollars or more on ceramic bearings, these look like they might do a good job of protecting your investment.