This chip easily allows you to change the angle of your FRP plate and roller. Even if you over tighten the parts, the included metal adjuster chip's will not be easily deformed. Because of this, the roller adjustment angle will remain consistent. Because it has the same width as a 2mm nut, it can be positioned with a wrench for secure installation. 2-degree 4 x 6.5mm Chip x4 3-degree 4 x 6.5mm Chip x4 Wrench x1 Compatible with Mini 4WD & Mini 4WD PRO cars.