GEC TOOLS 8PCS Engine Cylinder Compression Tester Kit G1005

Check valves and rings, and inspect for carbon buildup and late timing.
Adapters for a wide number of vehicles (spark plug types/depths) Kit includes 2 rubber cone ends for quick check (no need to thread into head)
3" Gauge has dual color scale with 0−300PSI,0−20kPa
The gauge will hold pressure values and has a quick push button release valve
Fittings: M10, M12, M14, M18 (Male, With "O" Ring)
Includes 14 mm and 18 mm spark plug adapters Includes use manual with technical support Comes with 1/2" diameter ×14′′ extension hose, straight and angled fittings, rubberized gauge protector, and a blow mold case.