The Staedtler Triangular Ballpoint Colour Pens Wallet of 10 features an ergonomic triangular barrel designed to deliver a remarkably relaxed and effortless writing experience. The high-quality, oil-blended ink writes smoothly and dries instantly to prevent messy smudging on school notebooks or office documents. Packed in a durable protective wallet, this vibrant 1.0mm medium-tip set provides excellent creative flexibility for everyday writing and color-coded sketching.