Ultimate Racing wheel axle spacers
Ultimate Racing have released these new adjustment washers, which have been made from spring steel and designed for adjusting the gap between the axle bearing and the wheel hub. Measuring 8.1 x 10 x 0.1 mm, they are sold in packs of 10 and allow you to perfectly adjust the wheel hub tolerance without affecting the bearing function.
Source: Ultimate Racing [ultimateracing.es]