Length:15.9cm Anti-clogging Design: Acrylic paint pens adopts rainbow press design.When you need to use the product, all you need to do is press the pen tip to use it for a long time.If you dont need to use this one design can prevent ink from flowing out and clogging the pen tip Strong Adhesion: Waterproof marker pens are made from a scientific ratio of water-based pigments and acrylic pigments.It has a strong adhesion and can be kept for a long time on a smooth surface.It doesn't fade after it has been completely air dried Product is light in color and can be left on paper. Easy to use: Our metallic marker pens can be used as colors directly pigment(br) Before each use, you just need to shake the marker pen up and down 2-3 times and then press the paper until the tip is filled with ink, and then you can start building.After use, be sure to cover the pen cap to prevent the unrestricted flow of ink from blocking the pen tip. Wide range of uses: water-based medium point marker pens adhere very well to smooth surfaces and can be used for painting on ceramics and glass.Acrylic pens for stones are also suitable for handicrafts and can be used for painting on photo albums, Guest books, stone, wood, metal, plastic and whiteboards can be used. Gift selection: Metal markers are perfect gifts for children, students, and painters.They can be used directly as a colored pigment and are the first choice for children to color in Christmas baubles.You can also paint with children to create an emotional Improve camaraderie with the children and enjoy your parent-child time.