This is a ring style that we seem to make almost weekly. It is fitted with cut outs on one side. This enables the band to sit flush to the engagement ring with no gaps. This is for the girl that wears her rings together. If she likes to wear them separately, then we don't usually use the cut out. In any case, these rings or similar benefit from being soldered together as it reduces the wear due to the rings rubbing together on the hand.