Air Hold Adapter Set Includes 14mm and 18mm Sizes 1/4 NPT Female Thread Use In Spark Plug Holes Black Proform Dial Indicator Gauge Great for Engine Assembly or

Great for Engine Assembly or Camshaft Degreeing

these units fit 1955-1982 Chevy small block and big block engines

This tool accurately measures the pull of a ring in the bore for a quantitative measurement of friction as a function of gap and diameter

Sold as a set of 4

Air Hold Adapter Set Includes 14mm and 18mm Sizes 1/4 NPT Female Thread Use In Spark Plug Holes Black Proform Dial Indicator Gauge Great for Engine Assembly orNow that you have the PROFORM Valve Spring Tester, you will need a set of PROFORM Air Hold Adapters to remove your springs with the heads on the engine. It is a simple 3 step process: screw the air hold adapter into your spark plug hole, attach air fitting, and then an air hose. The air pressure will hold up your valves while you get to work! Sold as one set. Product Details: Air Hold Adapter Set Includes 14mm and 18mm Sizes With 1 4 Inch NPT Female