With the BIC Intensity Dual Tip Markers in the 12-pack, you won't know which end to start with. These dual-ended felt-tip pens feature a soft brush tip and a fine point, making them an incredibly versatile tool. You can adjust the brush tip of these BIC Intensity Dual Tip markers in width for coloring large areas or modern calligraphy projects. With this modular and durable tip, you can achieve any style effect. Flip these adult coloring pens around and try the finer tip, which writes medium lines of 0.7 mm thickness. They are perfect for more detailed coloring projects, as they are designed for high-precision work. Although the tips are different, they use the same water-based ink, whose intense, vibrant colors will make each of your creations look beautiful. You get 12 fantastic colors that meet all your needs. Make important notes stand out and embellish your notebook or bullet journal with artistic lettering, drawings, or doodles. Anything that is fun is allowed, regardless of age. This is just another testament to how BIC's experience and expertise fuel your creativity.