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.
1 If the front brakes have been squealing loudly, you may need pads only. 2  If the car or brake pedal has been shaking when braking, you'll need to have the rotors resurfaced (called turning), or replace them. 3  If the car pulls to one side while braking, but stays straight otherwise, you may need calipers.