Make hydraulic disc brake maintenance and repair faster and easier with a Park Tool Hydraulic Piston Press. The unique, wedge-shaped tool slides into a hydraulic disc brake caliper to pre-set the piston when replacing pads, aligning pads, and performing other service procedures. The Park Tool PP-1.2 slides between the brake pads inside a caliper allowing you to spread the pads and compress the pistons when servicing pads or wheels. The PP-1.2 expands the gap between the pads, making it easy to insert the disc between the pads when reinstalling a caliper or wheel. A must-have for hydraulic brake maintenance and repair Pre-sets the piston in a hydraulic brake caliper Fits Shimano XTR caliper bodies Sure Grip dual density handle provides a positive grip