The metal food grinder is a well-made attachment for my powerful Kitchen Aid mixer. I bought it to experiment with grinding larger cuts of meat instead of just buying what the grocery store had.  What a difference in flavor and texture!  I ground a chuck roast and vegetables (onion, carrot, garlic) for a Bolognese sauce and then tried it another time for hamburgers.  I like that the flavorings can be ground with the meat for those type of recipes. I had the plastic version of the grinder from an earlier purchase but was disappointed-- I gave that one away now that I have the all metal one.