Write on almost any hard surface with these Sharpie ultra-fine-point markers. The twin tip features a fine-point and an ultra-fine-point, letting you make permanent marks with the sharpest precision. The quick-drying ink resists water, smearing and fading and works on glass, metal or almost any other hard surface. These Sharpie ultra-fine-point markers come in a pack of four colors: black, blue, green and red.