Jegs 80527 TDC Indicator Accurately Displays Piston Movement

Accurately Displays Piston Movement 14mm Threads Made of 1144 Steel Stainless Steel Spring 1-1/2 Travel TDC Indicator Accurately Displays Piston Movement 14mm Threads Made of 1144 Steel Stainless Steel Spring 1-1/2 Travel 1/8 Graduation Marks Made in the USA Note: This TDC indicator now comes with a sticker on the box stating it is for use only on Hemi engines with flat top pistons and that any engine with an acute spark plug angle and/or dome piston will bend the shaft of the indicator.