This Tombow Dual Brush Pen Sunset Set contains 6 of these versatile markers, particularly popular with graphic artists & watercolourists but great for just about any kind of drawing. Each has two tips: a fine one that’s perfect for details & a flexible brush. The brush is durable yet soft for creating fine, medium or broad strokes, & is also ideal for filling larger areas with colour. The ink inside the pens won’t bleed, & is odourless & acid-free. Since it’s water-based, you can blend the colours, just as you would with watercolour paint.