Axle Identification

So, I know there has been a thread on this, but I can't seem to find it for the life of me. :munky2: I know in that thread there was a link to a website that was very helpful in identifiying the axles...does anyone know what I am talking about? I'm trying to figure out what axles these are (they are off of a 81 Ram and are for sale, I just need to know what exactly I'm selling :-D )


Thanks guys!