Unlike watercolor brushes , oil brushes , and most other paintbrushes, Sumi brushes are composed of two separate parts. Yasutomo’s Bamboo Calligraphy Brush is no exception.

The central core of this brush, which determines its height and basic function, is composed of relatively stiff hairs gathered to form a tapered point. The outer wrapping consists of softer hairs that have been selected for their ability to hold water and facilitate smooth strokes.

The hairs of the inner core and the outer wrapping are the same length and come to a point when dipped into water.

The hair structure of the Yasutomo Bamboo Calligraphy Brush ensures smooth maneuverability and dynamic strokes when both light or heavy pressure are applied.