High quality ink, bright colors, fast dry and lightfast. Line width: 1.0mm. Tip: press the fiber tip. Ink: professional water-based pigment ink. Features: non-toxic, adhesive Strong, sunscreen and quick drying. Can write on paper, canvas, glass, ceramics, plastic, wood, metal and other materials. 6 to 14 years old, also applicable to those over 14 years old. Made In China.