Without a fully functioning handbrake lever, your car is not fit to be on the road. If it is showing signs of deterioration, no matter how new your car is, it is vital that you have it replaced. Handbrake levers are designed to withstand a lot of pressure, but they can corrode as much as any other metal part in your car. The gaiter, which is usually made from leather or plastic, protects the lever and prevents the driver from touching the oil and grease that are used to keep it functioning properly. They are frequently used to improve the interior aesthetics, too, so you can give your car some character.