This is pack of 10 Ultimate Racing drive shaft shims. These are the small shims used to shim the space between the drive shaft and the wheel hub. Its dimensions 8,1x10x0,1 mm allows adjusting perfectly the wheel hub tolerance without affecting the proper bearing function because it just lean on the internal part of the bearing.
This is a replacement Mugen Complete Bushing Set, and is intended for use with the Mugen MBX7 1/8 scale nitro buggy. This complete set includes all of bushings used in the suspension mounts to adjust toe angle, kick-up and anti-squat on the vehicle.