This invaluable spacer set features spacers of 5 different thicknesses, allowing you to make pinpoint setup changes to your Mini 4WD machine.2.1 x 4 x 1.5mm Spacer x4 2.1 x 4 x 3mm Spacer x4 2.1 x 4 x 6mm Spacer x4 2.1 x 4 x 6.7mm Spacer x4 2.1 x 4 x 12mm Spacer x4
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