Vac 700R BadBoy with Angelwings nib unit!  (BLS and Flex) "XF” - “BB” 
Yowza!
 
I had fun making this TWSBI Vac700 R nib into a very cool BadBoy! Work of art d’ya think? 
 
Screw this puppy into your Vac700R and make some art of your own. Photos above tell it all. 
 
$100