Brilliant name for a nib!
 
The Zebra G is like the Nikko G but more flexible so brilliant for most calligraphy projects. Made in Japan from steel it fits the Speedball holders and will deliver those desirable thick and thin strokes. 
 
Used on all of my Calligraphy Workshops and in most of my own work, despite having a vast range of other options!
 
Read a bit more about The Best Calligraphy Tools for Beginners in my Journal