Editorial Review TRB RC 5x13x4mm Precision High Speed Ball Bearing, Chrome Steel 52100 (GCr15) ABEC 3 with Metal Shields. Part SKU# TRB-695-ZZChrome Steel 52100 (GCr15) ABEC 3 Races Hard Chrome Steel 52100 (GCr15) BallsGreat Quality & Value For Applications Dimensions as follows: ID, OD, Width: 5x13x4mmThis Bearing Can be Used to Replace Part #:Losi: LOSA6955HPI: B018