This is a set of covers for the flap and aileron servo linkages on the ParkZone Radian Pro. These covers will protect the servo linkages in a "landing"
...Show more and prevent stripped gears. The aileron covers also have a rib that will skid along the ground when landing on hard surfaces.
Note that the left and right aileron covers are different. They have a bulge on one side to clear the tip of the pushrod.
Screw bases are provided that can be hot-glued into the wing to provide hard points for mounting screws. Note that you can actually position the screw bases inside the covers for printing to save space. See photos.