7*13*4mm CB LD A7 1PC SMR137 2RS CB ABEC7 7X13X4mm Stainless Steel Hybrid Ceramic Bearings/Fishing Reel Bearings SMR137C 2OS 1pcs fishing reel bearing s686 2rs abec 7 6 13 5 stainless steel hybrid ceramic ball bearings s686rs s686 2rs cb 6x13x5 mm