Save time and effort on your brake jobs with the Powerbuilt Ratcheting Brake Caliper Piston Tool. Just insert it into the caliper and ratchet the brake pistons out of the way. The tool is a center ratcheting caliper spreader built to push the brake pistons back evenly to allow space for installing the new brake pads without misalignment. The caliper spreader tool has two plate sets, 4-5/8 inches long by 2-3/8 inches high and 7 inches extended set, both work on single, twin, or quad piston calipers. With a spread range of 1-1/2 inches to 2-5/8 inches, it covers most passengers and commercial vehicles on the road today. The center ratcheting allows for a versatile 360-degree swing and can be placed in any direction. Made from carbon steel and durable plastic for durability and comfort. Every package comes with professionally written usage instructions that take you to step by step through proper tool usage.