Editorial Review TRB RC 5x8x2.5mm Flanged Precision High Speed Ball Bearing, Chrome Steel 52100 (GCr15) with Metal Shields. Part SKU# TRB-MF85-ZZ Chrome Steel 52100 (GCr15) Precision Races Hard Chrome Steel 52100 (GCr15) Balls Great Quality & Value For Applications Dimensions as follows: ID, OD, Width: 5x8x2.5mm This Bearing Can be Used to Replace Part # Axial: AXA1214 HPI: B019 Duratrax: DTXC1527