New, instant purchase OK. *I tested the pens. Sunstar Stationery Roller Stamp Pen cororo 4 colors, 8 pens One pen tip is a needle pen (color pen) for everyday use, and the other is a roller stamp for underlining and decoration. The roller stamps come in wavy line and dotted line types. You can mark important parts of textbooks or use them for decorating your planner. The ink is water-based dye. The price is 220 yen (including tax) per pen. Thank you.