Damn, I need some of them!! It is similar to a thing we have at work. (some of you may remember that) Picture if you will, a vice with aluminum jaws (NOT al u min ium, dear British friends). With the jaws closed there is a hole drilled right on the seam creating something similar to the jaws on these pliers. The pliers however, are portable and could save a lot of parts from damage. Thanks, Doug. TM