This tine row is for the top rack of your dishwasher, and prevents cups, dishes, and other items from moving around during the cycle. If your current row is missing one or more tines, or the tines have become corroded and are leaving marks on your dishes, you may want to consider replacing it. To do so, simply snap off the tine row pivots that hold the tine row in place, and remove the existing tine row. Then, simply replace it with the new tine row, and snap the tine row pivots back into place. When you order this part, it will come with a set of 2 tine rows. This is an OEM part sourced directly from the manufacturer.