TRB RC (10) 6 x 15 x 5mm Chrome Steel ABEC 5 Races with Nylon Ball Cage and 8 Hard Chrome Steel Balls, Open Bearing, No Seals, Dry. #696 Open*Chromium Steel ABEC 5 Races.*Matched Chrome Steel Balls for Higher Speeds*Nylon Ball Cage to Reduce Weight.*Non...