Compact compressed air cylinder leak tester. It indicates cylinder wear assessment (result in %), diagnosis of valve faults, cylinder head gasket leaks, or broken piston rings (required pressure 45 to 150 PSI). The tester features two pressure gauges and an adjustment knob, with a quick-connect hose and flexible hose. Adapters included: M14X1.25 (short), M18X1.5, M14X1.25 (long).