[This part is useful for improving the performance and setting of RC cars]

Aluminum suspension mounts used in place of the standard A1 parts. They hold the suspension firmly even during intense movements such as jumping. In addition. the mounting part of the suspension shaft is made of a separate part with a plastic bush. By replacing the bush. delicate settings such as toe angle and skid angle can be made. *Two are used per car.

[Basic specifications]
Set of blue anodized aluminum suspension mount and plastic mount bush

[Manufacturer page]
https://www.tamiya.com/japan/products/22055/index.html