Uni-ball Signo UM-151 0.38mm Pen Set

Uni-ball Signo DX UM-151 Ultra Fine Gel Pen Set (0.38mm)

Tailored for high-density note-takers, compact journalers, and technical drafters, the Uni-ball Signo DX UM-151 in 0.38mm is globally acclaimed for its microscopic line control and clean tactile feedback. This bundled set includes one complete capped gel pen accompanied by five authentic 0.38mm replacement refills (UMR-1). Formulated with Mitsubishi's proprietary pigmented emulsion, the ink locks into paper grain rapidly to deliver dark, crisp lines that resist water, smearing, and highlighter bleed even on thin planner papers.

Key Features

• Ultra-Fine 0.38mm Stainless Steel Tip: Precision-milled ball housing creates razor-sharp, hair-thin lines without scratching, catching, or blotching on fine-grid grids.
• Pigment-Based Archival Ink: Waterproof and light-fast formulation protects financial records, study revision notes, and archival sketches against moisture and fading.
• Comfort Contoured Rubber Grip: Cushioned finger zone provides non-slip traction and steady handling during micro-lettering and long study hours.
• Snap-Fit Cap with Secure Clip: Tight-sealing cap preserves nib freshness, while the built-in spring-steel clip fastens securely to notebook covers and binder pockets.
• Value-Packed 5-Refill Bundle: Includes five dedicated 0.38mm black ink refills, maximizing writing life while minimizing single-use plastic waste.

Specifications

• Brand: Uni-ball (Mitsubishi Pencil Co.)
• Model: Signo DX UM-151
• Tip Size: 0.38mm ultra-fine point
• Ink Type: Water-based pigment gel ink
• Ink Color: Black
• Mechanism: Capped with pocket clip
• Set Contents: 1 x Signo UM-151 pen, 5 x 0.38mm replacement refills
• Country of Origin: Japan

Frequently Asked Questions

Q: Which refills fit this pen model?
A: This pen uses the Uni-ball UMR-1 (0.38mm) refill series provided in this set. The pen barrel also accommodates 0.28mm (UMR-1-28) and 0.5mm (UMR-5) refills from the Signo DX lineup.

Q: Does the 0.38mm tip scratch or tear thin paper?
A: No. Uni-ball's precision micro-machining rounds the edges of the tip cone, delivering crisp, scratch-free ink laydown even across delicate 52gsm fountain pen and planner papers.

Q: How are the replacement refills packaged?
A: All five refills come individually sealed with factory silicone protective tips to ensure factory-fresh ink flow until you unseal and insert them.

Q: How do order modifications and refunds work?
A: Inquiries are supported after placing an order. You can request a full refund anytime prior to dispatch confirmation. Contact our dedicated support team at szjyf@outlook.com for order inquiries.