Pressure tester kit for engine repair 3-300 PSI digital gauge1、Quickly check the engine of car and you can find accurate data efficiently. 2、WIith four adapters, can be used to detect a variety of common engine faults such as worn piston rings, cylinder head cracks, worn valves and blown head gaskets. 3、Can check the amount of leakage in an engine cylinder and help to determine the source. It is easy to read gauges and get proper testing with accurate results. 4、The digital display has 4 switchable units with intuitive digital display, which is convenient to read. 5、Can be deflated, with good performance of sealing, increasing the accuracy of data reading. 6、Double rod test set, applicable to the gasoline engines of car, motorcycles, trucks and petrol vehicles. 7、Symbol of LCD battery flashes when battery voltage is lower than 2.5V, convenient for you to replace the battery in time.