Before the introduction of the euro, francs were also used in France, Belgium and Luxembourg, while Andorra and Monaco accepted the French franc as legal tender (Monegasque franc).
Inside the caliper is a brake pad, a small block of friction material backed with a metal plate. When you step on your brake pedal, pistons inside the caliper cause it to apply pressure to the brake pad which squeezes the rotor, causing the car to slow or stop.
Remove the retaining bolts that hold the caliper's brake hose in place to allow movement with a wrench. Some cars may have clips in place of the bolts. Use the edge of a Phillips or flathead screwdriver to pry open the clips. Throw away the old brass or copper washers. Never reuse old washers.