Pilot precise p-500 gel rollerball pen, extra fine, 0.5mm, blue barrel/ink, dozen gel roller pens have a distinctive two-tone barrel design, ribbed grip and precise point. Each pen delivers smooth writing with waterproof, acid-free, and smear-proof gel ink. Ink color matches barrel and cap accents. Water proof/smear proof ink/acid-free ink. this product arrives to most customers in 2-3 business days.