Say 'what's up?' to the Sector 9 Platinum ABEC 9 bearings. Or perhaps you should say 'what's platinum?'. Ok, maybe that one won't catch on. The important thing is that these bearings are fast. In fact, they're ABEC 9's, which is like a sleek greyhound. And your old bearings are like an overstuffed chihuahua who cannot even get through his doggy door due to his steady diet of lasagna and beef jerky.