Skate bearings take a beating and need some TLC, especially precision bearings. Improve your bearing life and keep your bearings running smooth and fast with Graphflo StackZ High Performance Skate Bearing Lube. This formulation was developed from scratch leveraging our materials science background. For older bearings, the lubricant is designed to fill the micro-scratches that occur on the surface of the raceway as well as the rolling elements. For new bearings, they are designed to cover surface imperfections that occur in all machining processes (metal and ceramics). In addition to covering scratches and surface imperfections, our materials are designed to "flex" and work with the fluid lubricant to allow the bearings to be unaffected by the viscosity of the oil.