This is a rarely seen size wrench by this quality tool maker in Ohio! It measures 15" long overall with jaws that are about 9/16" thick. Generally considered to be an automotive wrench, most are not found in this nice of condition. There is some dings on the rounded side of the movable jaw, not bad. This one has good straight jaws with some minor wear and dings on the edges of the jaws mostly, a good straight bar and threads. It will open up to 3.5" wide with the threads still fully engaged on the thumbscrew to the notches on the main beam. It is marked "FAIRMOUNT U.S.A. 15 IN" on one side of the beam in the hand grip area.