About Labwork: Labwork is an Auto Parts One-Stop Solution brand of more than 10 years, which specializes in providing global customers with top-notched quality automotive parts & accessories . If you need any auto parts, its enough to come to Labwork. Features: Manufactured with Precision to Meet OE Standards IATF16949 Certified High Quality & Brand New One Year Warranty After Market Replacement Customers Service Center Will Deal with Pre-sale and After-sale Problems In Time Piston Material: Steel Brake Piston Count: 1 Piston Piston Diameter: 2.60 in Inlet Port Size: 3/8 x 24 .