woocommerce_order_details_after_customer_details action-hook . WC 1.0

Usage

add_action( 'woocommerce_order_details_after_customer_details', 'action_function_name_517' );
function action_function_name_517( $order ){
	// action...
}

$order

-

Where the hook is called

<?php do_action( 'woocommerce_order_details_after_customer_details', $order ); ?>

Where in WP core the hook is used WooCommerce