Editorial Review TRB RC 10x16x5mm Precision High Speed Ball Bearing, Chrome Steel 52100 (GCr15) ABEC 3 with Blue Rubber Seals. Part SKU# TRB-BLU-MR1016-2RS/W5 Chrome Steel 52100 (GCr15) ABEC 3 Races Hard Chrome Steel 52100 (GCr15) Balls Rubber Seals to Help Fight Dirt Great Quality & Value For Applications Dimensions as follows: ID, OD, Width: 10x16x5mm This Bearing Can be Used to Replace Part #: Axial: AX31201 HPI: B032 HoBao: 88230