The tool is used to install or remove brake pistons from a brake caliper assembly without damaging the self-sealing ring or piston. It has two sizes of sockets for different types of calipers. Features: double action: the pistons are pressed equally from both sides the mechanism of the tool pushes the pistons with great force, without straining the user and ensuring easy and unobstructed work working range: 40-75 mm thanks to the 360° mechanism, it can be used anywhere on the piston pin the risk of pistons clogging due to their uneven expansion is eliminated universal - suitable for most brake calipers