Uni-ball Compo Fineliners, 0.3 mm, Ultra-Fine Plastic Tip, Everyday Precision, Ideal for Technical Writing, Assorted Inks – Set of 4

Key specs include Ultra-FineLines at 0.3 mm, a PreciseTip plastic needle point for tiny boxes and grids, CleanWriting quick-dry ink to reduce smears, SmoothFlow for consistent line delivery, and a PortableWallet-friendly four-pen set with assorted inks.

They're ideal for labeling, indexing, planners, micro-labeling, grid work, technical sketches, and neat annotations in journals and spreadsheets thanks to the precise 0.3 mm lines and quick-drying ink.

Cap the pen when not in use, and write with the tip as needed. Store the set horizontally or with the caps on to minimize drying. Keep away from excessive heat and direct sunlight to preserve ink flow and tip integrity.

These pens are designed for everyday writing and sketching. Follow standard safety guidelines, avoid ingesting ink, and keep the pens away from eyes. They are intended for adult use and regular school/work environments.

Compared to similar 0.3 mm fineliners on Fepy, the Compo Fineliners emphasize a plastic needle tip for precise micro-lines and a quick-dry ink to reduce smears. For reference, you can explore alternatives like these on Fepy: https://fepy.com/product/uni-ball-fineliners-0-3mm-4-color-set and https://fepy.com/product/uni-ball-compo-fineliners-0-4mm-4-color-set. You’ll notice differences in tip design, line weight, and available color options.

The set includes four pens with assorted ink colors. This particular set is a four-pen, non-refillable assortment. If you need additional colors later, you’ll typically need to purchase another four-color set or individual pens in compatible colors, depending on what Fepy offers.

They perform well on standard office and notebook papers, planners, and graph/journal papers. For best results, use on matte or uncoated papers where the 0.3 mm line can be clearly defined; very glossy or coated surfaces may cause occasional ink spread or slower drying.

Thanks to the quick-dry ink, these pens are designed to minimize smudging during fast annotation. Allow a brief moment for the ink to set when working with highly saturated lines or dense notes.

The package contains four Uni-ball Compo Fineliners with 0.3 mm tips in an assortment of ink colors. The slim, compact barrels are designed for easy portability and orderly storage in a small bag or pocket.

A 0.3 mm tip offers a balance between ultra-fine detail and legibility. It produces neat lines suitable for micro-labels and technical diagrams without sacrificing readability, whereas 0.2 mm is even finer (great for extremely delicate work) and 0.4 mm is bolder (better for emphasis and heavier lines).