Ran into a Rainbow Model "D" the other day-George got it as a trade in toward a new TriStar.Its a real cool machine.Has an all metal hard floor tool and a metal carpet tool-It has a crevice tool and a ulpholstry tool.Works pretty well-Like the "Rexaire" on the gold dome of the machine.Will need to clean its seperator.It came from a customer 80 years old.Its a beautiful machine.It was built in the days before powernozzles.Its vintage floor tools also fit my E2-cool using them with it.Work better than the plastic ones.Have to play with it more-its pretty neat-perfect 50's memerabilia!George brought it over while I was watching some 1950's Mickey Mouse club episodes.