Had someone ask how the dually kit works so figured I would upload some picks. First I pith the inner tire on which I used a crown Vic rim for the offset. Then I put the 5 8" extension studs on to hold it in place.
Next the actual spacer slips over the studs to keep them from twisting or bending.
Now the outer tire is mounted but it's reversed for space between the tires.
And finally the center cap if put on to finish it off.