This is a very nice, clean 8.5" long alligator wrench stamped "J O". The jaw serrations are at angle to the other surfaces of the wrench, making it a bit different from most alligator wrenches. The finish on this one is very smooth, and it is made of very good cast steel, with a hang hole near the end of the handle. Very nice antique wrench with no maker's name on it, but very good quality! No rust, or pitting, no damage, good jaw serrations! Unique!