These are adjustable upper arms that can be used on any variant of the TT-02 chassis. The parts allow you to add or decrease wheel camber. Adding camber for racing purposes allows the car to alter its traction characteristics under turning and cornering.  - Glass fiber-reinforced Upper Arms x2  - Stainless steel Turnbuckle Shafts x2  - Low-Friction Suspension Balls x2  - Arms are assembly type, and allow adjustment of camber in a range of 0 to 2 degrees.  - Compatible with TT-02, TT-02R, TT-02RR and TT-02D chassis cars.  - Cannot be used with Item 54639. If using with Item 53792, use Item 42236 for adjustment.