Uni Ballpoint Pen Jetstream EDGE dark blue (0.38 mm)

The Jetstream EDGE by Mitsubishi Uni is a ballpoint pen engineered for precision: its 0.38 mm needle point writes with oil-based Jetstream ink—quick-drying, deep black, as fine as a mechanical pencil line. The hexagonal plastic barrel widens from top to bottom, shifting the centre of gravity towards the tip and positioning the slightly ridged aluminium grip at your hand's natural writing position. Black ink, dark blue barrel.

Features

• 0.38 mm needle point ("Point Tip"): The tapered tip shape keeps your line of sight clear—the writing point remains visible even with tight, dense handwriting, never obscured by the barrel or grip section.
• Oil-based Jetstream ink with low viscosity: The ink flows smoothly and dries quickly in air. The line is deep, crisp, and smudge-resistant—archival-quality, water-resistant, fade-resistant, and tamper-proof. Perfect for signatures and original documents.
• Low centre of gravity: The barrel widens towards the grip zone, shifting weight downwards. This delivers steady, stable control, especially during extended writing with a fine point.
• Hexagonal ABS plastic barrel: The hexagonal profile prevents rolling across your desk and gives the pen a natural three-point grip in your hand.
• Ridged aluminium grip: Cool, smooth metal with fine ridge texture—provides grip without sharp edges, comfortable even during prolonged use.
• Push mechanism (knock): Capless and single-handed. The stainless steel clip is slim and flat—won't bulge in your shirt pocket.
• Refillable: Compatible replacement refills (SXR-203-38) are available separately—the barrel remains useful for years to come.

Use & Tips

• Tiny handwriting and dense grids: 0.38 mm allows script sizes where 0.5 mm tips already smudge. In 5 mm squared notebooks or tight weekly planner fields, every line stays clearly legible.
• Technical sketches and labelling: The needle point and quick-drying ink produce sharp, precise lines without smudging—on regular paper and smooth, calendered stock alike.
• Left-handers: Because the oil-based ink dries quickly, dragging your hand across it creates far less smearing than water-based inks.
• Bullet journalling and calendars: In pre-printed layouts with small fields—habit trackers, daily logs, time blocks—the 0.38 mm line keeps entries legible without overwriting the structure.
• Important documents: Archival-quality, tamper-proof ink makes the EDGE the reliable choice for signatures, contracts, and original records.
• Refill replacement: The compatible replacement refill (SXR-203-38) swaps in without tools. The aluminium grip stays on the barrel—no full disassembly needed.

For Fine Writing Enthusiasts

Jetstream ink works with a friction reducer around the ball—that's why 0.38 mm works at all with oil ink, without scratching or skipping. Standard oil-based ballpoint pastes at this tip size tend to clog; Jetstream's low-viscosity formula maintains consistent ink flow even through fine balls. The result is a line that appears darker and more even than many water-based gel pens of the same width—while drying faster. If you work on smooth, calendered paper with fine rulings, you'll notice the ink performs particularly cleanly here: minimal feathering, barely any show-through, no ghosting issues.

Technical Specifications