What is this tool set for?
That is a set of punches. 

There are pin punches (the straight flat tipped ones), for popping out roll pins and the like. 

Center punches (the pointy ones) for marking a point in metal where to start a drill and to keep the drill bit from wandering.

Looks like two nail sets (the tapered flat pointed ones) for setting nails below the surface in wood.

And one tiny little chisel.