Gil;
That BGI tool looks a lot like the one I have, but don't recall it having any makers mark on it, will have to get it out & look it over closely. I didn't have any problem removing the head on mine, just got a grip on it with something non-marring, don't recall now exactly what I used, & cranked it backward. I have a Williams brand "Channel-Lock" which has been heated & the hardness taken out of the Jaws. I have used these many times with about a 1/16" thick piece of aluminum under the jaws for gripping things & this is probably what I used here, just don't recall for certain.
