Terms of the Trade: What Is a Brake Caliper Tool?
A brake caliper tool is necessary when you are changing the brake pads on a car and helps to prevent damage to the pistons while working with the brake pads. A brake caliper tool retracts the pistons back into the actual caliper so the brake pads can easily be removed and replaced. The tool itself fits over the piston at one end. At the other end, there will be a handle allowing for rotation. With each rotation, the piston will wind into the caliper itself.