Without TÜV certificate.
With this system we will avoid gaps in the rim-spacer-hub assembly.
With a set of screws we will attach the spacers to the hub, being fully integrated in the body.
The other set of screws will be used to fix the rim to the spacer.
It includes 2 spacers and 10 conical screws to fix the spacer to the hub. It does not include the screws to fix the rim to the spacer.