M10, m12, m14, m18; 1x extension hose (14" length). Function: The cylinder compression tester kit is a professional tool for testing the compression of gasoline engines. The readings will help diagnose if there are stuck valves, carbon buildup, piston or cylinder head modifications, cracked cylinder heads or defective main gaskets, poorly installed or worn piston rings, etc.
This product would be ideal for automotive repair shops, auto enthusiasts, and mechanics who need to accurately test and verify the compression pressure of car diesel engine cylinders.
