>when you need one of those you REALLY need it.
Truth.
When you need a box wrench, and all you have is an open end, you can fudge it
When you need a open end, and alll you have is an adjustable , you can fudge it
When you meed a crowsfoor, and you don't have one, you might as well bang your head on the wall.
I always look for them at flea's, I find them occasionally floating around in the bottoms of tool boxes, and when they are a decent maker (Sk, bunney, snappy) a snatch them up, I have most of a set now, tho, it's a bit pecular...
And, no, the chinese ones do NOT work ;P