QUANTUM BEARING SCIENCE | Fusion Ceramic Hybrid Bearingshe most technologically advanced skate bearing available.. With the entire metal surfaces coated using our Diamond Matrix (DMx) technology, this hard as diamond coating will significantly reduce wear and corrosion build up so you can keep cruising with speed for longer. Designed for transition, park skating, downhill, cruising the Fusion series bearings are guaranteed to keep you out of the slow lane. Tech Features: Ceramic Hybrid Hybrid Bearing