An interesting note about this wrench...
Both ends are stamped with two different measurements, a 'USS' size and an 'SAE' size... neither are the actual size of the wrench.
I measured the ends this afternoon... one is 1-7/16, the other is 1-5/8...
I'm guessing the stamped sizes are the diameter of the bolts they would fit, NOT the head size of the bolts...
-Bear