With the double-ended design, you can use 3mm brush tip for sweeping, details, and calligraphic, or the 6.5mm broad strokes chisel tip for quickly color in large areas. Alcohol brush markers are more durable and do not fray easily. *NOTE: Alcohol Based Markers like ALL other brand alcohol markers, will Bleed through regular coloring paper, except very thick paper. Perfect for card making, doodling, and hand-lettering. Excellent smudge-proof and waterproof qualities on most surfaces, work well on ceramics, plastic, or rock. Creative art craft supplies present for teachers, kids, friends, Christmas, Thanksgiving, and Birthdays. High-quality ink blends seamlessly to create beautiful coloring effects. Triangle barrel design provides both a comfortable grip and conveniently prevents markers from rolling off desks and tables. Ideal for professional art and craft. Each pack includes 6 markers in pastel colors. Sold as 3 packs for a total of 18 markers.