Sure! Here are some alternatives to the phrase "dual purpose":
1. Twofold function
2. Double utility
3. Multi-functional
4. Twin usage
5. Dual intent
6. Combined purpose
7. Versatile application
8. Dual role
9. Bifunctional design
10. Two-in-one capability
Let me know if you need further modifications or additional options!
Acid-free
These acid-free, water-based dual tip markers feature a 2mm bullet tip for outlining and detail, and a nylon brush tip for shading, coloring and blending; they work well on all paper surfaces; use them for coloring, art, illustrations, doodling, journaling, hand lettering or sign making.