Handbrake shoes sit inside a rotating metal drum attached to the wheel. When the handbrake lever is pulled up by the driver it pulls cables which in turn force the handbrake shoes against the surface of the brake drum. This provides the friction required to stop the car from moving.
Handbrake shoe for any car rarely wear down as they are generally used to secure the car when it is already stationary. They are however often subject to corrosion, particularly in extreme climates, when contaminated with fluids or worn excessively. They must be replaced to maintain handbrake effectiveness. Show Less