This set of 12 brush markers gives you double the color options. One end of the dual ended marker has a darker color-the other end a lighter complementary color. Brush markers are great for art and craft projects, creating elegant writings or colorful doodling. All 24 brush marker colors feature acid free inks. For ages 6 and up. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs.