Lakerat has it right. The ends of the threaded pieces will have the thread spec stamped on them. The tool handles between them are the handles for threading the guides into and out of the BB shell. I suspect the BB chasing tap set, upper left in the box, is for English threads as that's the most common and what many Campy tool kits were sold with. There are Itl. and Frnch taps out there if you want to spend the bucks. BYW there are a couple of other companies that make tap sets for the Campy BB chaser handle, although still pricy.

This is what is called the "reduced kit" as some of the tools in the big kit are missing. Like a dishing tool, hub spanners, head set cup knock out tool (sometimes called the rocket tool) and others. Still this kit is highly valued by builders.

If you get use to working with these tools and then use Park or even Var tools you'll likely feel the finer fit and care that Campy tools are well known for.

BTW I see the instruction/tools description sheets too. They will give more insight. Andy