Mini-Logo Bearings are skate rated, precision grade 608 bearings made to Skate One specifications. They feature a removable rubber shield on one side so you can install them without denting the shield, a removable metal shield on the other side so you can clean your bearings easier, a high speed, synthetic ball retainer designed to take the impacts of hard core skating without breaking, precision ground and super-finished races and balls to roll faster, and come pre-lubricated with Bones Speed Cream. Our tolerances and clearances are based on twenty years experience developing the best skate bearings in the world. We call this combination of special construction and selected components "skate rating," and it is what makes our bearings different from all others. Skate Rating goes way beyond ABEC ratings and is what makes Mini-Logo bearings skate better than other bearings costing twice as much. We call that value, which is what Mini-Logo is all about.