Arteza Fineliner Fine Point Pens, Fine Tip Coloring Markers, 24 Assorted Colors (0.4mm Tips, Set of 24) Set of 24 super-fine, 0.4 mm tip, water-based fineliner pens Triangular-shaped barrel for perfect grip, also wont roll off desks or tables Long-lasting metal-clad encased tips for precise detailing with rulers and stencils Non-smudging, odor-free & acid-free ink. Ideal for left-handed use. Come in a metal protective storage case