The cardinal rule of air-cooled VW ownership is that you adjust your own valves and to do that you need a feeler gauge. To adjust valves you probably only really need the 0.005", 0.006", and 0.007" blades (too see if you got 'em too tight, too loose, or just right; at least that's how I do it) but a few of the others come in handy too, like the 0.026" or 0.027" feelers to gap your spark plugs.
As a replacement I got a new set with the angled blades, for some reason thinking the offsetedness would make them better but I was wrong. After a few needlessly contorted valve adjustments I bent them all straight, like the old set.



