The MADDOX® Cylinder Leak-Down Tester is designed to provide one of the most accurate tests available for diagnosing overall engine health. Quick-connect fittings make setup fast and easy. Large easy-to-read gauges have a color scale for precise readings. The complete kit includes pressure regulated manifold with dual gauges, 24 in. quick-connect hose with M14 threads, M10, M12, M18 adapters, blow molded case.