Top Dead Center Indicator.

Features

• Tool whistles as the piston approaches Top Dead Center (TDC) on the compression stroke and stops whistling when the piston reaches TDC.
• Helps to eliminate the guesswork involved when diagnosing jumped timing belts and timing chains.
• Aids in valve adjustments and installation of distributors, timing belts and timing chains.
• 2-in-1 fitting threads into all 14 mm and 18 mm. spark plug ports.
• Overall length of 27 in.
• Not for use on diesel engines.
• Instructions included.
• Item Weight – 0.34 lbs.