Flexible brush tip works like a paintbrush to create fine, medium, or bold strokes making them the perfect tool for hand lettering, illustration, drawing, rubber stamping, and more. Made of smooth and resilient nylon fibres, making them durable enough to take on pressure without breaking or losing their original shape even after extensive use! Tips are self-cleaning, allowing you to mix and blend colours without fear of permanently staining or ruining your marker-simply brush onto scrap paper to clean the tip! Fine bullet tip is strong and firm, giving a consistent fine line perfect for drawing embellishments, intricate designs, details, and writing! Easily mix and blend ink to create an array of new colours. Blend two ink colours together or use the colourless blender pen to create watercolour effects. Or just add water using a paintbrush to create soft subtle colour washes! Water-based ink is odourless, non-toxic, and acid-free. Colour-coded caps for ease in organisation and quick selection of the 96 colours while keeping tips air tight and fresh! The brush pen cap also features an 'anti-roll' design which is perfect for busy artists and cluttered work spaces!