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