Security Ink Ballpoint Pen Medium Black (20 Pack) LL09868 This Medium Ballpoint Pen contains security ink, which is tamperproof, waterproof and fadeproof. Ideal for legal documents, contracts, forms and more, the lightweight, round barrel features a finger grip for comfort in use. The medium 1.0mm ballpoint tip writes a 0.5mm line width for smooth, flowing writing. This pack contains 20 black pens. Medium ballpoint pen with security ink Ink is tamperproof, waterproof and fadeproof Lightweight round barrel with integrated grip Medium 1.0mm tip writes a 0.5mm line width Secure cap Barrel colour: Clear Ink colour: Black Pack of 20