Faber Castell-Water Color Pen 24 Colors (Flat Tin) Introducing the Faber Castell-Water Color Pen 24 Colors (Flat Tin). With a wide range of 24 vibrant colors, this set is perfect for artists and illustrators alike. The water-based ink allows for easy blending and layering, giving you endless possibilities for creating beautiful works of art. Each pen has a durable and flexible tip, making it perfect for intricate details or bold strokes. And with its compact and convenient tin case, you can easily take your creativity on the go. Experience the smooth and vibrant colors of Faber Castell today.