I remember the tool you are talking about, can't remember the name however. I believe Sears sold a version back when there was a Sears tool department, so that has been many years. The one problem I do remember is although they held extremely well, when trying to hang something on them if you bumped the locking lever or maybe you would call it the cam lever while going in the up direction the whole assembly would fall to the floor. Most annoying when you had your hands full!