Editorial Review TRB RC 3/8x5/8x5/32" Precision High Speed Ball Bearing, Chrome Steel 52100 (GCr15) ABEC 3 with Rubber Seals. Part SKU# TRB-R1038-2RS 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: 3/8x5/8x5/32"This Bearing Can be Used to Replace Part #:Team Associated: 3976, 6903Dynamite: DYN3021Duratrax: DTXC1437XTM: 149149