• The DTC Indicator enables accurate setting of the piston to top dead center.
• Just remove the spark plug, screw in the guage, and rotate the engine, observint the gradation marks on the sliding shaft.
• 1/8" gradation marks.
• Installs as easily as a spark plug.
• Made of 1144 steel alloy with a stainless steel spring.
• 14mm thread on both models.
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