The Mr Hobby Set of 2 Water Brush Pens with Tank is a must-have for artists and hobbyists. These brush pens are designed with a built-in water tank, making them convenient and mess-free. The fine and medium brush tips allow for precise and versatile strokes. With their durable construction, these pens are perfect for watercolor painting, calligraphy, and more. The transparent barrel lets you easily monitor the water level. Whether you're a beginner or a professional, these water brush pens will elevate your artwork to the next level. - Built-in water tank for convenience and mess-free painting - Fine and medium brush tips for precise and versatile strokes - Durable construction for long-lasting use - Perfect for watercolor painting, calligraphy, and more - Transparent barrel for easy monitoring of water level