Not only create a hazy effect,but also used be as paintbrush.
When you shade by hatching is ok,you can use this tortillon to draw pattern and texture.
These can also be used with charcoal, graphite and other pencils when making sketch.
They can be sharpened, also known as stumps or tortillions.
If this stomp with color,it can be used for making shadows,dark areas.
6 x Tortillon