A sketching and drawing pen that elegantly combines function and durable sleek design. The nibs and cartridges can be easily exchanged and the nibs are encased in solid metal sleeves guaranteeing precise drawing and incredible detail. Pigment-based ink which is water and alcohol resistant and ideal to use with Copic markers. The ink will not blur or fade and the flow is consistent making it ideal for all types of sketching and illustration. Available in a variety of sizes and in Brush style.