Got some info from Filzer that I thought everyone might like to know....

I asked what their tools were comprised of (i.e. stamped steel, forged steel, chromoly, etc.) They responded by saying this:

For the big tool box - the tools are steel (stamped wrenches) - but decent
quality. Of course the other tools are made from different types of steel
depending on the tool...

Our individual tool line - the wrenches are laser cut chromoly... they cost more
and are better quality.

We're coming out with a new tool box (basically the individual tools put in a tool
box) - which we are using laser cut chromoly wrenches - so better quality - but
you won't see this new tool box for about 4 months...and the cost will be
more... maybe a retail of $200.(CAD)

I'm not sure what Park tools are made from (I have an email into them too) but chromoly is pretty durable. I also appreciate the quick response I got from Filzer. Good customer service.