Social Share Buttons on Product Pages

in , 
/*Social Share Buttons on Product Page*/
add_action('woocommerce_after_single_product_summary', 'avia_add_social_toolbar', 1);
function avia_add_social_toolbar()
{
        if( is_singular( 'product' ) ) {
	    $content   = '<div class="share_heading">Dieses Produkt teilen:</div>';
	    $content  .= avia_social_share_links(array(), false, '', false);
	    $content .= '<div class="hr"></div>';	     
	    
	}
	echo $content;
}