These fine point (0.4mm) pens feature water-based ink in vibrant colors, formulated to sustain a long cap-off time. The uniquely-designed, long-wearing tips are encased in metal, so the pens can be used with rulers and stencils. The caps are ventilated for safety. Set comes in a yellow and white striped hard case, and includes Ice Green, Ultramarine, Green, Blue, Light Green, Yellow, Brown, Black, Carmine, Crimson, Turquoise, Pink, Orange, Violet, Azure, Lilac, Olive Green, Dark Ochre, Light Gray and Dark Gray. Details: Assorted colors0.4mm tips20 pensDurableWater-based inkLong cap-off timeIncludes case