function edd_download_metabox_fields() {

  $fields = array(
      '_edd_product_type',
      'edd_price',
      '_variable_pricing',
      '_edd_price_options_mode',
      'edd_variable_prices',
      'edd_download_files',
      '_edd_purchase_text',
      '_edd_purchase_style',
      '_edd_purchase_color',
      '_edd_bundled_products',
      '_edd_hide_purchase_link',
      '_edd_download_tax_exclusive',
      '_edd_button_behavior',
      '_edd_quantities_disabled',
      'edd_product_notes',
      '_edd_default_price_id',
      '_edd_bundled_products_conditions'
    );

  if ( current_user_can( 'manage_shop_settings' ) ) {
    $fields[] = '_edd_download_limit';
  }

  if ( edd_use_skus() ) {
    $fields[] = 'edd_sku';
  }

  return apply_filters( 'edd_metabox_fields_save', $fields );
}