Ideal for shading of greys.  This brush pen allows for different shades of grey depending on the level of pressure used
 
  
Medium brush tip
  
Can be used for calligraphy, lettering, sketching, outlining and inking illustrations
  
Users don't need to press on the main body to control the ink flow, as proper amount of ink flows naturally
  
Refillable
  
Water-based pigment
  
Made in Japan