The unique, wedge-shaped PP-1.2 slides into a hydraulic disc brake calliper to pre-set the piston when replacing pads, aligning pads, & performing other service procedures. Makes hydraulic disc brake maintenance & repair faster & easier. The Park Tool PP-1.2 slides between the brake pads inside a calliper allowing the user to spread the pads & compress the pistons when servicing pads or wheels. The PP-1.2 expands the gap between the pads, making it easy to insert the disk between the pads when reinstalling a calliper or wheel. Sure Grip dual density handle provides a positive grip. The PP-1.2 fits the Shimano XTR calliper bodies.