Three water tank brushes in different sizes for colouring paper with ink or watercolour.
To fill the tank unscrew and top up, dip the pen into a glass of water so that its fully saturated, make sure the painting tip is regularly moistened with water, thereby creating beautiful watercolour effects.
Maybe not the best quality but not bad. It does the job and doesn’t leak. Having trouble with the water in the tank being contaminated with the paint I’m using. This could be user error!