This steel attachment is used for grinding Masa, Nixtamal or any other wet or moist grains with your Mil-Master mill. This attachment is not designed to process sprouted grains, i.e. wheat. A wooden dowel (included with attachment) can be used to push the corn or wet wheat or any other grains through the funnel hole to expedite the grinding process. Grinding Masa and Nixtamal involves a different grinding method than regular dry grains such as wheat and corn. Please note that none of our mills are Masa and/or Nixtamal grinders. They were designed for primarily process dry grains. The different grinding attachments were designed to process small batches of Masa and/or Nixtamal for household use only and not for commercial applications such as restaurants, bakeries, etc. The output on this attachment is about half of the standard output of regular dry grains. There is a learning curve involved in grinding Masa and Nixtamal. It would be the consumer's responsibility to master the technique involved in grinding Masa or Nixtamal This attachment is a special order item and 50% restocking fee will be accessed for this item if returned within 30 days of receipt of merchandise. There is a 10 year warranty on this item. Available in all 12 colors. Please feel free to e-mail us anytime to find out the current delivery on this item or if you have any specific questions about this item.