A Body axles 7 1/4 w/ 4 1/2 bolt circle

I have never seen axles like this with that bolt pattern in such a small rear end. The rear end in front of the one I took a picture of is also a 7 and 1/4 but has the small bolt pattern so I figured it has to be a rare deal if somebody wants to put 15 in Wheels without changing the rear end this would be the quick way to do it