This automotive cylinder leak tester works with most car models with gasoline engines. It 's widely used to detect a variety of common engine faults such as worn piston rings, cylinder head cracks, worn valves and blown head gaskets. It checks the amount of leakage in an engine cylinder and helps determine the source.Specifications:Case Color: BlackMaterial: Rubber + Aluminum + IronDual Gauge Readings: 0-100psi, 0-7bar, 0-100%Test Unit/Mode: bar, psi Special function: Get Accurate ReadingsPressure Gauge Diameter: 3" / 75mmPressure Gauge Height: 6.42" / 163mmSpark Plug Adapters Thread Size: 12mm, 14mmHose Overall Length: 17.72" / 450mmShort Hose Length: 11.81" / 300mmFixed Short Connector: M12 x 26mm Fixed Long Connector: M14 x 26mm Package Size: 34 * 27 * 8.5cm / 13.39 * 10.63 * 3.35inPackage Weight: Approx. 1415g / 3.1lbPackage List:1 * Dual Gauge Leak Detection Unit 1 * Short Hose1 * Fixed Short Connector M12 x 26mm 1 * Fixed Long Connector M14 x 26mm 1 * Storage Case