VERSATILE USE: Ideal for art projects, corrections, and color-coding notes, this 12-pack includes colorful pens for note taking SMOOTH WRITING: These marker pens feature a no-fray tip, that provides medium-width points and creates strong lines and detailed work HIGH PIGMENTATION: With smear-resistant, water-based ink, these multi colored pens offer vibrant color, ideal for both creative and practical needs DURABLE DESIGN: These colored markers are constructed with sturdy plastic housing and a matching removable cap CONVENIENT STORAGE: The multicolored pens come with a metal clip for adequate pocket storage ASTM D4236: Conforms to ASTM D4236