Common tip sizes range from ultra-fine to medium. Typical point sizes shown in listings include 0.38 mm, 0.5 mm, 0.7 mm and 1.0 mm.
Black ink pens are offered in several ink technologies, including rollerball, gel, ballpoint, and felt/porous‑tip marker styles.
Product listings use descriptive terms for point size such as Ultra Fine, Extra Fine, Fine, and Medium to indicate the tip and resulting line width.
Some listings highlight eco-friendly details such as pen barrels made from renewable or reclaimed materials, packaging printed on FSC‑certified paper, and the use of soy‑based ink for packaging.
Common features include retractable mechanisms or removable caps, rubber or contoured grips, soft‑touch barrel coatings, visible or decorative barrels (translucent or metal finishes), and pocket clips for carrying.
Pack sizes shown in listings commonly include small multipacks and larger sets—examples include 2‑, 3‑, 4‑, 10‑, and 22‑pen packs.
Both retractable pens and cap‑on pens appear across product listings. Descriptions emphasize the convenience of retractable designs and note when pens include removable caps or specific cap‑on features.