When servicing disc brakes or replacing the pads, the Park Tool Brake Piston Press can help you hold down the pistons to get into the disc brake. This tool increases the gap between pads which makes it easier to install a disc between the pads. The tool is made with a dual density handle for a great grip that stays comfortable. Please note that it is not intended for use with ceramic brake calipers. The Park Tool Brake Piston Press makes changing brake pads and discs easier than ever.