Uni-ball Uni Pin Compo Fine Ball Pen, 0.3 mm, Pigment Ink, Smooth Ink Flow, Optimized Control While Writing, Ideal for School, Home & Office Use, Blue – Pack of 12

Key specs: 0.3 mm ultra-fine tip, pigment-based archival ink, blue color, metal-clad tip for durability, waterproof and fade-resistant ink, and a pack of 12 for consistent use across schools, homes, and offices. The ink is designed for clean scans and long-lasting lines.

If you’re exploring alternatives on Fepy, you can compare to: Uni Pin Fine Point 0.3 mm Blue (https://fepy.com/product/uni-pin-fine-point-0-3mm-blue) and Uni Pin Fine Point 0.3 mm Black (https://fepy.com/product/uni-pin-fine-point-0-3mm-black) for the same tip size in different colors, or Uni Pin Fine Point 0.5 mm Blue (https://fepy.com/product/uni-pin-fine-point-0-5mm-blue) for a bolder line. These options help you choose based on line weight and color needs.

It’s excellent for precise handwriting, technical drawings, architectural diagrams, graphs, annotations on documents, and artwork that requires sharp, consistent lines. The fast-drying, waterproof pigment ink helps prevent smearing on typical writing and art papers.

Store the pen capped when not in use, and keep it in a cool, dry place. When writing, use a comfortable grip and apply steady, even pressure to maximize line consistency. Avoid exposing the tip to excessive bending; the metal-clad tip is designed to resist wear when used with rulers or templates.

The ink is pigment-based and designed for reliable, archival quality writing. While always follow standard safety practices, it’s suitable for classroom and office environments when used as intended. Avoid ingestion and prolonged contact with skin or eyes.

Yes, a 12-pack offers consistent supply for multiple users and projects, helping maintain uniform line quality across documents. Consider whether you need blue only or a mix of colors, and whether you require archival-grade line integrity for long-term records or scans.

A 0.3 mm tip delivers very fine, precise lines suitable for detail work, margins, and technical drawings. In comparison, 0.5 mm tips produce bolder lines with more emphasis, and 0.2 mm tips offer ultra-fine lines for meticulous detailing. Choosing depends on the required line weight and the project’s scale.

The pigment ink is designed for sharp lines and decent drying speed, which can help reduce smudging for many users, including left-handed writers. However, drying time can vary with paper type, so using quick-drying paper or allowing a brief dry period before touching the line can help minimize smudging.

Use smooth, high-quality paper to minimize feathering. Allow lines to dry fully before scanning, and store originals flat to prevent smear or edge curl. The dense pigment ink is designed to yield crisp, scan-friendly lines, which helps with legibility in copies and digital reproductions.