Uniball Needle Vision rollerball pen features a needlepoint tip for ultra precise writing performance and finesse. Uniflow system delivers smooth, ultraprecise, scratch-free writing with consistent flow of ink to paper. Ink is waterproof and nonfading for permanence. Stainless steel points provide exceptional strength and durability. Window in barrel reveals the amount of ink remaining. Rollerball pen also features a soft grip for smooth and controlled usage.