DELI High Quility Fine Point Permanent Markers, Box of 12 Markers, Black Color (Double-tip 0.5-1.5mm) Fiber pen tip,wear-resistant and durable in use Vivid color ink,smooth writing,water-proof and fast dry Comfortable touch,no fatigue in long time writing Available in kinds of different surfaces Double tip one side is 0.5mm, another is 1.5mm