206 could be either of two things: Is it magnetic? It would be applied to
a screwdriver stem to make it hold screws. The other possibility (also
assuming it is magnetic) is a fraudulent device sold by Harbor Freight to be
applied over a fuel line, to help break up the clumps of molecules of
I have seen one, much larger, used to cut clay sewer pipe. It looks like it
would be turned, so the wheels make a groove, like a glass cutter. The
contractor I watched merely tightened the chain, and the pipe popped in two.
I don't know of any clay pipe in sizes that this tool could handle, so it is
plausible that it would be used for glass tubing, such as is used for boiler
sight glasses, etc.
As I mentioned in a different post, the seller told me that he thought it
was a glass cutter, I finally found one just like it on this page, second
from the bottom:
click on the photo for a larger one.
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