QUBE Bearings by Sure-Grip have been years in the making, nothing has been overlooked. Using a special 3D modelling process, we call QUBE, which means Quality Utilizing Better Equipment, we have engineered a Roller Skate specific bearing. For over 70 years Sure-Grip has been making the finest roller skates in the world, and now comes the first roller skate bearing designed for roller skating. Several professional skaters have taken part in the design of these new bearings and we are confident that no other bearing on the market can produce a better feel or roll. Trust the professionals and trust a bearing that was designed specifically for roller skating. Product Description and Features : The QUBE Gold bearing is the second bearing that we developed using this technology, this bearing uses what we call QUBE 3D SWISS technology which incorporates all we have learned in bearing design. Using our 3D modelling technology we have determined the perfect ball diameter, inner and outer wall diameter, 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 hard anodize process creates an even stronger steel while “SSL” oil 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. Pack Contains 16 Bearings.