High-quality watercolor pen: The high-quality nylon hair brush head ensures that the watercolor pen remains intact and not be sprayed, smeared or smeared during use. Convenience-light, portable, and an essential tool for artists and hobbyists, and can be used , in the studio or . Easy to use: just unscrew it (in a different way than usual) and fill it two-seconds with tap water, and you're ready to go. Simply squeeze the bucket to easily control the ink or water flow. It is very suitable for pure color or powdered pigments, used together with watercolor crayons, water-soluble pencils, water-soluble pigments, and inks. Easy to clean: just wash with water after use. Colour: transparent white Material: plastic Package Contents: 6 x Water pen 12cm (large/medium/small tip) 6 x Water pen 15.5cm (large/medium/small tip) 6 x Water pen 18.5cm (large/medium/small flat head) 6 x Water pen 18.5cm (large/medium/small tip) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.