1、Water based Ink: Water based ink is acid free, non toxic, odorless, and quick drying. It is completely safe for teachers, students, collages and children to use while doing homework or artwork. 2、Professional: This thick stem round tip metal pen flows smoothly at the thin round tip, but doesn't spill, easy to write on, and doesn't clog. 3、Features: Thick lines and strong coverage, affluent writing, high cost performance, vertical writing, good use effect. 4、Gifts: It can be coloring and writing for a long time without getting tired, it is a gift for friends and children's birthday, International Children's Day, Halloween, Thanksgiving, New Year and Christmas. 5、Applicability: Use permanent paint markers to create artistic projects on almost any surface for wood painting, rock, stone, ceramic, glass, fabric, canvas, mugs, plastic, textiles, metal, and more. 10 x Metal Marker Pens Item Type: Paint MarkersProduct Material: Water Based Ink, PlasticSpecifications: 10 Pcs/BoxProduct Application: Graffiti, Painting, Coloring, Notes, Box Cards, Office Writing