The Qube Gold Swiss bearing uses what we call QUBE 3D SWISS technology which incorporates all we have learned in bearing design. Using our 3D modeling technology we have determined the perfect ball diameter, inner and outer wall thickness, and groove depth to ensure the best roller skating bearing on the market. Stronger steel is used here as well allowing a deeper groove to ensure less friction and faster roll. A special hard anodize process creates an even stronger steel, a new special oil helps keep heat down, and a double Labyrinth seal combine to make an even cleaner environment for a faster roll. The QUBE 3D SWISS is the fastest rolling bearing in our line and our most tested bearing as well.