How to empty all td:eq(2) without loop through all row in jquery

<table class="@listitems.tablename">
     <thead>
          <tr>
              <th id="gradeName">@item.GroupLabel</th>
              <th id="selectCategory" class="grade_td">Select One</th>
              <th id="Comments">Comments</th>
</tr>
                    </thead>
<tbody>
 <td>text</td>
 <td><input type="radio" name="@items.ControlId" checked="@listItems.IsChecked" class="UnCheckOthers" id="@items.ControlId" value="@listItems.ControlValue"/>
                                                @listItems.ControlValue</td>
 <td class="Comments">comment</td>
</tbody></table>

<br />
   This is my table structure. Now i want to clear all the td:eq(2) from the above table when i click, any of the radiobuttons inside the table. I have written jquery code to do this task that works fine, for first row of the table how can i empty all the td inside this table using jquery.<br />

    $('.UnCheckOthers').click(function () {
        var className = $(this).closest('table').find('th:eq(0)').text();        
        $('.' + className.replace(/\s+/g, '').toLowerCase() + ' td:eq(2)').empty();
});

Can anyone give solution to this problem?