Schumacher U4808 ATOM Diff balls. 1/8th Chrome steel (12)
Use with Pan car Spur gears.
Not for Supastox spur gears: Use 3mm.
CORE-RC CR510 ATOM Spur Gear 66T 48DP (1/8th balls)
XRay 930130 X1 F1 Carbide diff balls 3.175mm (1/8th) Pack of 12
CORE-RC CR511 ATOM Spur Gear 69T 48DP (1/8th balls)