TRB RC 10pcs 10x15x4mm Precision High Speed Ball Bearing, Chrome Steel 52100 (GCr15) ABEC 3 with Blue Rubber Seals. 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: 10x15x4mm Bearing is Compatible with Part #: Axial: AXA1230Arrma: AR610001ECX: ECX1055HPI: B030Losi: LOSB5970Kyosho: BRG014Mugen: K0603TLR: LOSA6943Traxxas: 5119, 4612, 5119ATeam Associated: 25616, 91563Vaterra: VTR237028 TRB RC M10x12mm Dia. Steel Shim Pack 10ea 0.1, 0.2, 0.3, 0.5mm Width / Thickness. Dimensions and Qty's: ID = 10mm OD = 12mm Width/Thickness = 10ea 0.1mm 10ea 0.2mm 10ea 0.3mm 10ea 0.5mm