All the stationery in my shop is drawn from my own holster! Sharing my illustration toolbox with you, these items are my personal favourites, go-tos for myriad illustration and lettering jobs.
 
This Zebra brush pen has a fine brush end and a fat brush end, both tapering to a fine point - both are soft. The ink is rich and wet and black (so give it a sec to dry), and are designed for one-time use (not refillable). In Japan these sit at the slightly higher end of the brush pen market!
 
Sweeping, narrowing strokes are possible and these pens are also excellent for lettering, sketching and outlining. 
 
Black ink.