High-quality watercolor pen: The high-quality nylon hair brush head ensures the watercolor pen remains and will not be sprayed, smeared or smeared during . Convenience-light, portable, and durable make it an essential tool for artists and hobbyists, and can be used at home, in the studio or on the go. Easy to : just unscrew it (in a different way than usual) and fill it two-seconds with tap water, and you're to go. Simply squeeze the bucket to easily control the ink or water . It is very suitable for pure color or powdered pigments, used with watercolor crayons, water-soluble pencils, water-soluble pigments, and inks. Easy to clean: just wash with water after . Colour: transparent white Material: plastic Package Contents: 3 * Water pen 12cm (/medium/small tip) 3 * Water pen 15.5cm (/medium/small tip) 3 * Water pen 18.5cm (/medium/small flat head) 3 * Water pen 18.5cm (/medium/small tip) Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.