Uchida 1500-24 Brush-Tip Markers, Assorted Colors, Set of 24 Set of 24 water-based ink markers in rich, vibrant shades Large brush-style tips provide thorough color saturation Acid-free, non-toxic formula won't damage paper or photos Effective with rubber stamps; part of Marvy Matchable collection Measures approximately 9 by 7 by 1-4/5 inches Perfect for Coloring Adult Color Books