This is a basic bicycle adjustable wrench, but with a rare name marked on it. It is marked "THE BECKLEY - RALSTON CO. CHICAGO", some believe that this may have been a distributor of tools, rather than the maker. I tend to agree, since very few examples can be found, and no patents can be found for wrench with either last name. So the wrench is similar to other names, but the stamped name is rare in this case. A nice clean wrench with a few spots of minor pitting. Jaws work smoothly, no damage, little wear. A rare wrench because of the name on it!