What is it ?

[wldavis3]

Can anyone tell me the name of this wrench ?

[Bobacuda]

Fritz Von Erich, aka "The Iron Claw"

[Plymouthy Adams]

that is unique...combination of a channel lock less the channels and a preset slider stop common to some slider wrenches....official name...I don't know....good find, good post..

[PT81Jan]

That is a "Rohrzange" / kind of "Wasserpumpenzange" ? translator says "pipe wrench"

also called Sweden pliers, so not Erich`s pliers ?

https://www.google.de/search?biw=1600&bih=763&tbm=isch&sa=1&ei=f29-XZvpL9DMwQKGpLOAAg&q=Rohrzange&oq=Rohrzange&gs_l=img.3..0l10.21013.21663..23131...0.0..0.64.228.4......0....1..gws-wiz-img.......0i7i30j0i7i5i30j0i8i7i30j0i10i30j0i30.K11ZhWgOy8c&ved=0ahUKEwjbpN6GqNPkAhVQZlAKHQbSDCAQ4dUDCAY&uact=5#imgrc=tMTjk2pg2F_kaM:

Edited September 15, 2019 by PT81Jan

[Plymouthy Adams]

good sleuthing...… 

[kencombs]

Looks like if functions similarly to what used to be called 'water pump pliers' or slip joint pliers.  Jaws open and close near parallel whether set for narrow or wider opening.

[Dodgeb4ya]

Snap on calls that style of plier an "Adjustable Wrench Plier" one of my tools that does more than expected.

It will grab anything and not let go...amazing quality and grip.

[Frank Elder]

Crescent, channel, and vise grips rolled into one.

[cheesy]

I have a couple of European Beta and Facom versions of those that came with my job. Heavy and take up a lot of room in the tool box. Handy when you need them. I just call it my BFP.

[wldavis3]

Thanks everyone for the replies, and thank you to PT81Jan for the identification.