Editorial Review TRB RC 2pcs 8x12x3.5mm Precision High Speed Ball Bearing, Chrome Steel 52100 (GCr15) ABEC 3 with Rubber Seals. Part SKU# TRB-MR128-2RSx2 Chrome Steel 52100 (GCr15) ABEC 3 Races Hard Chrome Steel 52100 (GCr15) BallsRubber Seals to Help Fight Dirt Great Quality & Value For Applications Dimensions as follows: ID, OD, Width: 8x12x3.5mmThis Bearing Can be Used to Replace Part #:Losi: LOSB3007Traxxas: 7020Team Associated: 21106