12 Colors Set Double Line Pen

Made of specially formulated, xylene-free opaque ink. Non-toxic, acid free, and environmentally-friendly.Turn the tip of the pen up and shake the pen holder. Press the pen tip 3 times on paper until the ink flows to the tip. Please recap immediately after use to avoid volatilization. Ink is suitable to use on light color cardboard papers. Write like a regular pen without deliberately increasing the pressure, and delivers crisp, clean lines every time. Stimulating interest in learning, taking notes becomes interesting.BEST FOR DIY.For kids or adults who like to various festivals, greeting cards, birthday need DIY projects and other craft projects with the paint markers. The vivid color and special pen tip makes it no hassle or mess to clean up, it is the best choice for your gift.