Proform 66792 Top Dead Center Locator

Proform piston stop tool is a quick easy way to make sure your piston is at top dead center when you are cam indexing, adjusting valves, or installing the distributor. Threads into any cylinder head with a 14mm spark plug hole. Height: 0.75″. Width: 4.75″. Length: 7.50″. Weight: 0.25 lbs.