Two part valve wrench question

[Stormin Mormon]

http://www.acehardwaresuperstore.com/lewis-emergency-shutoff-wrench-p-36221.html?ref=42

I got something like that at Harbor freight. The rectangle slot is good for
gas shut offs. But then, a large crescrent wrench or near to any size of
pipe wrench works fine. The part that slips down a hole, to rotate the top
of the controlling shaft. I havn't found any valves around me that are
suitable size. The one under my trailer is far too small, this (below) valve
wrench won't go into the tube. Much the same with the residential water shut
off near me.

Anyone used one of these to slip the forked tongue into a hole and operate a
valve? Where are you? And what kind of valve? I've been wondering. I sure
don't find them around here.

--
Christopher A. Young
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