The Snap On EEPV309A Diagnostic Tool Cylinder Leakage Leak Down Tester Gauge is a high-quality, durable tool designed for testing cylinder leakage in gasoline engines. Made in the United States, this leak-down tester features multiple measure scales and can detect leaks with a maximum PSI of 300. Perfect for use with ATVs and passenger vehicles, this tool comes with a convenient carrying case for easy portability. With no warranty but excellent performance, the Snap On EEPV309A Diagnostic Tool is an essential tool for any automotive technician looking to accurately diagnose cylinder issues in gasoline engines.