•Fit 10mm, 12mm and 14mm spark plug threads.
•Equipped with air-hold valve and gauge reset button.
•12" flexible rubber hose.
•Checks cylinder compression from 0 to 300 PSI (0 to 21 kg/cm2).
 

•Fit 10mm, 12mm and 14mm spark plug threads.
•Equipped with air-hold valve and gauge reset button.
•12" flexible rubber hose.
•Checks cylinder compression from 0 to 300 PSI (0 to 21 kg/cm2).