Thanks, I was thinking they were for the dually but I couldn't place an image of it in my head. Heres my why, I know it's a bit anal, but seems like it's a pain in the rear to get all of the smudges off the chrome normal SRW caps. It's like cleaning a mirror, most owners wouldn't care or just pass it off but I thought these would look cleaner and be easier to clean when washing the truck too.
-Ryan