These Angels Craft brushes are designed to hold water in their barrels, allowing for smooth, continuous strokes and effortless blending of colors. Perfect for creating beautiful watercolor paintings, they are also great for calligraphy, hand lettering, and even for use with water-soluble colored pencils. Whether you're working on a detailed piece or a broad, expressive stroke, this set provides the versatility needed to bring your artistic vision to life. Plus, they're portable and easy to clean, making them ideal for artists on the go. Contents: -1 flat tip 10mm brush -1 flat tip 4mm brush -1 fine tip 4mm brush Directions: Unscrew the top section and fill barrel with water. Once secured, squeeze the barrel gently allowing the water to flow onto the brush then paint away!