Uni Jet Stream ballpoint pen EDGE white (0.28 mm)

The Uni Jetstream Edge is an oil-based ballpoint with a 0.28 mm tip – the finest point Mitsubishi Uni has achieved in this ink technology. The white barrel combines a hexagonal plastic cylinder with a lightly knurled metal grip and tapers smoothly from top to bottom, positioning the centre of gravity close to the tip. Ink, shape and grip zone work in harmony: fine writing, steady hand control, precise command.

Features

• 0.28 mm needle point (Point Tip): The conical tip gives a clear view of the writing point – ideal for densely written notebooks, calendar grids and tabular entries where every millimetre matters.
• Jetstream low-viscosity ink: The oil-based ink flows smoothly without warm-up – minimal resistance, no ink blotting when you start writing. Black lines appear rich and crisp, even with very small script.
• Document-grade, water and lightfast: The ink is document-grade and resists water and fading. Suitable for signatures, contracts and archive records.
• Hexagonal barrel, knurled metal grip: The hexagon prevents rolling and gives your hand an immediate stable three-point hold. The fine ridges in the metal grip stay secure even during long writing sessions without cooling the grip zone.
• Low centre of gravity from conical shape: The pen grows wider and heavier towards the tip – this relieves wrist strain because less active guidance is needed.
• Refillable refill: Compatible with the Uni ballpoint refill Jetstream 0.28 mm – the barrel remains useful long-term.

Use & Tips

• Tiny lettering and microwriting: At 0.28 mm, you can fit multiple lines even in 5 mm grid squares – practical for budget tables, weekly planners or academic notes.
• Paper choice: Jetstream ink is robust and performs reliably on most paper types. On smooth, calendered paper the lines appear sharpest and dry fastest.
• Signatures and forms: Since the ink is document-grade and water-resistant, the Edge is ideal for anything that must remain permanently legible – even if the paper gets damp or needs copying.
• Right-handed and left-handed users: Oil-based ink dries on the paper surface faster than gel ink – smudging when writing left-handed is significantly less than with water-based ink.
• Combined with the Style-Fit system: The 0.28 mm Jetstream refill also works in the Uni Style Fit multi-pen barrel – if you want to combine different colours or widths, you can reuse the same refill diameter.

For Ballpoint Enthusiasts

Jetstream ink technology uses a polymer additive that deliberately reduces the viscosity of the oil-based ink – the result sits noticeably between classic ballpoint ink and gel ink, without the drawbacks of either (smudging with gel, scratchiness with oil). The 0.28 mm ball is encased in a conical metal sleeve that exposes the writing point while guiding it across the paper surface – hence the name "Point Tip". For those who write on fine grids or in Asian characters with many strokes, this geometry is not a luxury but a functional difference.

Technical Specifications