Features: Cylinder leak detector is designed to detect whether the cylinder leakproofness of the automobile engine is within the allowable leakage range, which can further judge the location and cause of the leakage from the fault condition analysis, so as to take measures to eliminate the fault. Double scale compression testers with measuring range of 0-7bar and 0-100psi, suit for any petrol engines fitted with 12mm or 14mm spark plugs. By comparing the normal cylinder pressure of the engine and the measured pressure to determine the leakage condition. Designed with rubber protective cover on the pressure gauge, anti-drop, anti-scratch, ensure the safety use. Supplied with a storage case for easy carrying and storage. Specification: Material: Metal, Rubber, Plastic Pressure Measuring Range: 0-7bar/0-100psi Package List: 1 x Double Pressure Gauge Leak Detector (Suitable for any petrol engines with 12mm or 14mm spark plugs) 1 x Hose 1 x Fixed Short Connector 1 x Fixed Long Connector 1 x Storage Case Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.