Artists and crafters, you're going to love these watercolor brush pens! This set comes with 6 different brushes - 3 round tips and 3 flat tips in sizes ranging from 1cm to 1.8cm diameters. Each brush has its own water reservoir built right into the handle, so you can paint without constantly dipping in water. The nylon brush tips are soft and flexible with great water absorption, creating smooth, consistent lines. You just fill the tank with water (don't go over 2/3 full), dip the tip in your watercolor paint, and squeeze the barrel to control the water flow. They work with water-soluble colored pencils, solid watercolors, inks, or even diluted acrylics. The transparent bodies let you see how much water you have left, and the caps protect the tips when not in use. Cleaning is super easy - just rinse with tap water and let air dry. They're about 15cm total length, making them portable enough for outdoor sketching or travel. The quality feels professional - the brushes maintain their shape well and don't shed bristles. Perfect for watercolor techniques, calligraphy, lettering, card making, and various art projects. Whether you're a student, hobbyist, or professional artist, these brushes offer incredible versatility and convenience. Much less messy than traditional watercolor setups, and the ability to control water flow precisely really improves your painting experience. Such a smart design that makes watercolor painting more accessible and enjoyable!