Features: 1.Ergonomically designed pen holder, comfortable to hold. 2.The pen's quality ink is acid-free, chemically stable, waterproof, and fade resistant. 3.Perfect for illustration and doodling, as well as using on canvas, plastic, glass to bring your colorful to life! 4.Ideal for design, animation, drawing, writing, engineering, technical drawing, gifts, office/school stationery, etc. 5.They are an excellent gift item, as they are great for helping kids, teens and adults expressing their innovative side. specification: Ergonomically designed pen holder, comfortable to hold. The pen's quality ink is acid-free, chemically stable, waterproof, and fade resistant. Perfect for illustration and doodling, as well as using on canvas, plastic, glass to bring your colorful to life! Smear resistant water resistant fade resistant non bleeding ink. Ideal for design, animation, drawing, writing, engineering, technical drawing, gifts, office/school stationery, etc. They are an excellent gift item, as they are great for helping kids, teens and adults expressing their innovative side. : Condition: 100% Brand New Item Type: Micron Liner Marker Material: Plastic Color: As shown in the picture Pen Tip Moel: 0.3mm,0.4mm,0.5mm,0.7mm,1.0mm,0.03MM,0.1MM,0.8MM,Brush(Soft head pen),0.05MM,0.2MM,0.6MM(Optional) Package List: 1 x Pen Tip: The difference between oil and water is waterproof, but it has strong oil adhesion. It can be used on canvas, plastic and glass in addition to paper. For example, DVD. It is recommended to be water-based mainly if it is used on paper.