Brand new, Genuine Tamiya Ball bearing (1piece).  Taken from various late model Tamiya kits, but never used.  Bearings will work with all RC cars that use metric ball bearings.  Sizes and dimensions are listed below.

Tamiya Part # Description Size
OD
(mm)		 ID
(mm)		 Thickness (mm)
53126  1510 15 10 4
- 1280 12 8 4
- 1060 10 6 3
54579 1150 11 5 4
51239 1050 10 5 4
51090 950 9 5 3
53030 850 8 5 2.5
9805672 840 8 4 3
9804243 630 6 3 2.5