Moroso Pro series cylinder leakdown tester quick diagnoses failed or leaking valves, pistons, rings, head gaskets. Housed in a stand up black powder coated steel case to protect the components. Calibrated for high accuracy and repeatability. Has a large 3-1/2″ gauge face indicates percentage of leakage rather than PSI, eliminating the need for math calculations a 4- foot hose with quick coupler disconnect fitting and adapter 14mm 18mm. A small air compressor with minimum of 90 psi is required to do the test. Special order item 7-10 business days. Please e-mail with questions.