Enduro Bearings S6001 2RS – 12x28x8

″THE SEALS will be LLU or LLB: 2RS literally means Two Rubber Seals. Many bearing manufacturers use the ″″2RS″″ designation to indicate that their seal is made from rubber and has one sealing lip rubbing on any flat part of the inner race. For us, 2RS means a proper rubber seal on each side of the bearing. On the ABEC 3 series, the seals are either LLB (well suited for hubs) or LLU (better for suspension pivots).″