Use of wp_nav_menu_items filter

Hi, I'm using this filter in my functions.php file for adding a custom menu item.
Using the following code:

function add_brand_link( $items, $args ) {
    	$items .= '<li><a class="brands selected" data-submenu="brands" href="javascript:;">I nostri brand</a></li>';
    return $items;

I'm able to get the item but located the end of menu. I'm wondering if there's a way to specify a different position of the item in the menu.