Each Tombow Dual Brush Pen has two tips: a fine one that’s perfect for details & a flexible brush. The brush is durable yet soft, & you can easily use it to create fine, medium or broad strokes. It’s also ideal when you want to fill larger areas with colour. The ink inside the pens won’t bleed, & is odourless & acid-free. Colours are not light resistant. Since it’s water-based, you can blend the colours, just as you would with watercolour paint. Tombow Dual Brush Pens are particularly popular with graphic artists & watercolourists, & are ideal for all arts & crafts, illustration, typography, manga drawings, card-making, rubber stamping, scrapbooking, calligraphy & more. Download a colour chart here