Wicked Swiss bearings are the benchmark of performance bearings around the world, so for that reason, WCD teamed up with Jesa to design a high-performance product that ensures anyone who uses it, will have not only the fastest but also the longest-lasting bearings in the world. When world-class athletes such as Bart Swings spend countless hours refining their physical condition, they also demand the best material, thats why he chooses the Swiss bearings. If you are looking for a no-nonsense performance package, you have to choose WCD Swiss. BE WICKED.