You can buy it or you can print it ;-)
http://www.ebay.de/itm/Kurbelhalter-Kurbelstangenhalter-fur-Kurbelstange-Wandhalterung-grau-NEU-/151988784809?hash=item23633ccea9:g:R2EAAOSwQYZWxxiS
I print it in ABS
The author marked this model as their own original creation. Imported from Thingiverse.