This model FC6-A Sunbeam grinder and chopper attachment for their Mixmaster kitchen mixers comes with the power transfer unit which is needed to run many of the numerous Sunbeam mixer attachments. The power unit fits Mixmaster models 9 through 11, I'm not sure if it fits earlier models or the model 12). All parts appear to be present except the single page assembly instruction sheet. Everything is clean and shiny, apparently not used much. Original box included.