Set of 16 Wicked SKF WCD Skate Bearings which will cover 8 wheels. SKF bearings are known to be some the fastest bearings in the world and are used by the best skaters and teams around the globe. Made in France they feature only the best of materials like chrome steel inner and outer rings, nylon reinforced cages with balls and raceways that a honed to perfection. The low viscosity lubrication make them spin fast and keep them durable.