This priceless spacer set features spacers of 5 different thicknesses, letting you make pinpoint setup modifications towards Mini 4WD device. This version enables you to include a splash of color set alongside the standard silver set as noticed in item 15473. These blue anodized aluminum components can be used with rollers, back remains, brake sets and so forth! Measurements are defined by the immediate following: (inner diameter x outer diameter x length) 2.1mm x 4mm x 1.5mm Spacer x2 2.1mm x 4mm x 3mm Spacer x2 2.1mm x 4mm x 6mm Spacer x2 2.1mm x 4mm x 6.7mm Spacer x2 2.1mm x 4mm x 12mm Spacer x2