If you already own the Family Grain Mill (formally Messerschmidt) mill or flaker as an attachment onto it's own motor, you can add the hand drive so you will have an emergency mill when the power goes out. Heavy duty wood construction with built-in adapter to attach mill and easy-to-turn thick steel handle. If your mill or flaker attachment fits on the Bosch machines with an adapter on the back end, then they will also fit on this hand drive without the adapter.