Uni-ball Signo Gel Impact, 1.0 mm Bold, High-Visibility Pigment, Ultra-Smooth, Quick-Dry, Comfortable Grip, Ideal for Headings & Signatures - Red

Tip size: 1.0 mm. Ink: red gel pigment with quick-dry properties. Features a soft rubber grip and low feathering for crisp, clean lines.

Both use the same 1.0 mm gel tip and quick-dry pigment. The only difference is ink color, so choose based on whether you need red or black for your document style. See: https://www.fepy.com/product/uniball-signo-gel-impact-1-0mm-black

Yes. If you prefer blue, you can find the 1.0 mm blue variant on Fepy at: https://www.fepy.com/product/uniball-signo-gel-impact-1-0mm-blue

Great for card notes, labels, and highlighting important lines on forms where high contrast is helpful; the quick-drying ink reduces risk of smudges during rapid writing.

Cap, grip, and write. There’s typically no preparation needed beyond removing the cap. If using a fresh refill, start with light strokes to ensure ink flow, then write with consistent pressure.

The Gel Impact line uses pigment-based gel ink that’s designed to be bold and fade-resistant, suitable for everyday documents. It’s non-toxic and generally performs well on standard papers.

Many Signo Gel Impact models use replaceable refill cartridges. Check compatibility for UM-153S-style refills if you want to extend the pen’s life; ensure the refill matches a 1.0 mm tip.

The ink is designed to dry quickly to reduce smudging, so chances are low. If you’re writing very quickly, give it a moment before handling the page.

The pigment red is bright and high-contrast on ordinary printer and copier paper; on glossy or coated stock, the line remains vivid but may dry slightly slower depending on the surface.

Given its bold line, quick-dry properties, and comfortable grip, it’s a strong choice for headings and signatures on many documents while offering reliable performance at a reasonable price.