Thanks Brad. I was coming to the same conclusion about buying the four sizes. The 40 that I am restoring has mostly all slotted screws, not the clutch head, but there are a couple in different areas of the truck that have a couple clutch head. Just enough to stop the progress because I don't have the right tool when I need it. Isn't that always the way. For $18, I should get the set.

1940 Chev pickup

“Make the world a better place, save a rusty truck.”