This stick pen uses a revolutionary oil-based gel ink that writes like a gel, lasts like a ballpoint. Bright intense ink is quick drying, waterproof, permanent, fade-resistant, acid-free, archival safe. Won't smudge or smear on most paper. Pen provides 450 meters (1,476') of consistent, scratch-free write-out from its 1.0mm rollerball tip. Cap, end cap and comfort grip depict ink color. Nonrefillable.