ZKTOOL 46PCS Compression and Leakage Test Kit Petrol & Diesel Dual Gauge Engine Compression Tester Kit Automotive Cylinder Leak Down Tester Kit for HDI, TDCi, Pumpe Duse Engine，0-725PIS. In addition, the compression gauge is equipped with a pressure relief valve to reduce the risk of fuel injection by releasing pressure before disconnecting, ensuring safety during operation.
