Sharpie twin tip marker with tip size 0.3mm and 1.0mm Increased functionality with both a Fine and Ultra Fine tip in the same marker. Marks on most hard-to-mark surfaces. Permanent on most surfaces. Twin Tip for added versatility in labeling CDs and jewel cases Permanent quick-drying ink reduces smudging AP certified nontoxic formula. Permanent ink marks on paper, plastic, metal, and most other surfaces. Intensely brilliant colors create eye-popping, vibrant impressions. Remarkably resilient ink dries quickly and resists fading and water. Endlessly versatile twin tip with two different tip types is perfect for countless uses.