You will need a Phillips screwdriver with a blade.
NOTE
Replacement is shown by the example of the left visor, right visor replaced similarly.
1. Bring the axis sun visor from the slot in the bracket, pull the visor to the side, remove the two screws on the arm of its fastening to the body panels (screws in the photo shown by arrows) and remove the visor.
2. Install the sun visor in the reverse order of removal.