Premium tamper-resistant Ballpoint Pens with a medium tip. Its comfortable rubber-grip and triangular barrel is perfect for short or long term use. Lovely purple ink, to brighten up you work, popular with teachers for marking work, or for a vivid writing style. Ventilated safety caps, airplane-safe, and a high quality 1.0mm long-life nickel silver tip with tungsten carbide ball. Blob free ink for smooth writing every time.