What is the function of Brake Drum in automobile brake?

What is a tambourine, one might ask? What is the role of the brake in a car? I'm going to give you a quick recap. Brake drums are for low-end cars, vans, buses. Is Part of the drum brake system, where the Pistons apply pressure to two pairs of half-moon brake shoes so that they cling to the inside of the drum chamber, creating friction to stop the wheels from spinning, simply put, it's used to wear out the brake pads, braking by friction with the brake pads -- Stopping / slowing down. The gap between the brake drums should be adjusted regularly, and the sides should be the same or the brakes will turn off (dangerously) . The advantages of this type of brake are good and inexpensive, but it does not dissipate heat very well, especially when the oil is long downhill. That's why the big trucks spray water on the wheels.