Separating is good. Identifying even better. Categorizing is just brilliant. While no fan of adjustable wrenches, I use them often enough. If good quality they grip securely, and reliable enough knowing to pull or push on the hard jaw. Some of the kit handed down, must be 70 years old. They're evident, the heads were very thick in the past, perhaps another half of current. These are Crescent pattern, not Monke style, but nothing beats a Trimo. Holy Moley, THAT'S a wrench!