The Park Tool PP-1.2 is designed to fit between disc brake pads within the caliper, allowing users to separate the pads and compress the hydraulic pistons during pad replacement, alignment, or other maintenance tasks. By expanding the gap between the pads, the PP-1.2 simplifies the process of inserting the disc when reinstalling a caliper or wheel. The tool features a dual-density handle for a secure and comfortable grip. It is compatible with most hydraulic disc brake caliper bodies, including those from Shimano XTR. The tapered end of the PP-1.2 is 25mm wide Total insertable length of the tool is 26 mm Thickness of the wedge is 4.1 mm NOTE: Wedge-style piston tools such as the PP-1.2 are not intended for use with brake systems that utilize ceramic pistons, such as Shimano road disc brake calipers.