function specs_field_presave($entity_type, $entity, $field, $instance, $langcode, &$items){
    if (empty($items)) {
      return;
    }

    //reformat the items array for our data to store into our schema correctly
    $values = $items;
    foreach($values as $delta => $item) {
        $items[$delta] = $items[$delta]['specs'];
    }
}