Won't skip, smear or clog. Writes clear, bold, sharp lines effortlessly. Clear, transparent plastic barrel shows ink level. Plastic clip/cap keeps it pocket-handy.Key Benefits: Quality ink, quick drying and smooth writing Tungsten carbide ball, perfect sphere and very resistant Medium point: 1.0mm, line width 0.4mm Hexagonal barrel for comfortable handling Clear barrel for visible ink supply Cap and plug color matches ink color Ventilated cap compliant with ISO 11540 / BS 7272-1 standardEnvironmental benefits Long lasting product: up to 2 kilometers writing length Light: designed and manufactured with just the right amount of raw materials PVC free product1 Dozen Blue Pens.