http://www.hopf-shop.de/product_info...da0fb5c977a648
Hi Sonnich, this is a 2,2mm flexshaft (Flexwelle) with strut for 400-480 type motors, make sure to give the correct length when/if you order.
Also make sure it includes an endpiece (Endstück) with thread for the prop.
Just let me know if you run into translation difficulties...
Regards, Jan.