Hethrone Black Dual Brush Marker Set 12 Pens for Adult Coloring BooksBring depth and detail to your coloring projects with the Hethrone Black Dual Brush Marker Set. Featuring 12 dual tip pens, these markers are perfect for adult coloring books, illustration, and creative designs. Key Features Set of 12 black dual tip brush markers Dual tips: fine and brush for versatile use Smooth, blendable ink ideal for shading and detailing Perfect for adult coloring books, illustrations, and crafts Long lasting and high quality