Does anyone know

It is a screw/bolt extractor of the paralell style....Snap-On and Ridgid had ones like that.

http://ecx.images-amazon.com/images/I/512yVhCWY-L._SY300_.jpg

Here's a set I forgot I had, for 3 decades lol.. note the guides for the drill bits..

Snap-on,

hope it helps

Looks like we got a winner. Funny, I've looked through the Snap-On catalog many times and never spotted them