Arrma Big Rock 223S BLX Sealed Bearing Kit
(3) 5x8x2.5
(4) 5x10x4
(4) 6x12x4
(4) 10x15x4
(8) 12x18x4
(2) 15x21x4
Arrma Item #ARA4312V4T1, ARA4312V4T1, ARA4312V4T3
You are purchasing the bearings listed above.