'TDX' should read 'WSX.'

What does that stand for?

Bob is that Tungsten?, or should it be Molybdenum Disulphide ??
--------------------------------------------------------------------------------------------------

W = Wolframite = Tungsten
(Moly is M or Mo)

Go to the site, read the specs. Burnishing Wolfram Disulfide into the
surface converts it into a virtually friction-free metal, allowing you
to assemble your engines to tighter tolerances. When combined with
some of the ceramic-based coatings that allow better management of
your waste heat, you can build a more durable, more efficient engine.
But YOU will have to build it -- it costs the earth to have the
coatings applied.

-R.S.Hoover