Hot Rods Mallory parts or tools?

Saw a post on Ebay that has these 3 parts included. I have never seen these before. Anyone know what these are or what they do?

They almost look like crimper attachments for securing spark plug wire ends?


for reference Ebay listing NOT MY LISTING

 

I think you got it. To crimp the brass ends on plug wires.

 

Yes, for plug wire ends. I've got a set of them...they work very well.

 

you can put one in a vise, and use a hammer and the other one to make the crimp.

 

They used to come in Accel wire Set's when I was a kid Late 70's