Uni-ball Signo UM-151 Gel Pen Set

Uni-ball Signo DX UM-151 Gel Pen with 5 Refills (0.5mm)

Engineered for precision drafting, note-taking, and daily journaling, the Uni-ball Signo DX UM-151 delivers consistent, clean lines powered by Mitsubishi Pencil's archival pigment ink. This comprehensive set pairs one durable capped gel pen body with five factory-sealed 0.5mm refills (UMR-5), ensuring uninterrupted writing mileage. The specialized water-based pigment formula bonds deeply to cellulose fibers, preventing feathering, bleed-through, and water smudging once dry.

Key Features

• Precision 0.5mm Stainless Steel Tip: Machined with a robust micro-ball seat that produces steady, clean line widths without skipping or railroading.
• Archival Super Ink Formula: Water-resistant, lightfast, and tamper-proof pigment ink that resists fading and liquid spills on legal forms, study notes, and planner spreads.
• Ergonomic Ribbed Grip: Soft, tactile rubber section minimizes finger fatigue and slips during extended study sessions or desk marathons.
• Capped Design with Sturdy Clip: Secure snap-on cap prevents nib drying while the durable pocket clip anchors firmly to notebooks, folders, and pencil cases.
• High-Value Multi-Refill Bundle: Includes one complete pen plus five matching 0.5mm replacement refills for prolonged utility and reduced plastic waste.

Specifications

• Brand: Uni-ball (Mitsubishi Pencil Co.)
• Model: Signo DX UM-151
• Tip Size: 0.5mm fine point
• Ink Type: Water-based pigment gel ink
• Ink Color: Black
• Mechanism: Capped with secure pocket clip
• Set Contents: 1 x Signo UM-151 gel pen, 5 x 0.5mm gel ink refills
• Country of Origin: Japan

Frequently Asked Questions

Q: What refills are compatible with this pen body?
A: The pen uses standard Uni-ball UMR-5 (0.5mm) refills included in this package. It also accepts 0.28mm (UMR-1-28) and 0.38mm (UMR-1) refills from the Signo DX family if you wish to adjust tip size later.

Q: Is the ink waterproof and highlighter-safe?
A: Yes. Uni Signo pigment ink becomes completely waterproof once dry, making it resistant to water spills and mild highlighter smears on standard notebook paper.

Q: How do I store and preserve the extra refills?
A: Each refill arrives with a protective silicone sealing bead on the tip. Keep the sealed refills stored horizontally at room temperature away from direct sunlight until ready to install.

Q: What is your order handling and cancellation policy?
A: We focus all customer support on post-order care and fulfillment. You can request a full refund at any time before shipment confirmation. For any order support, reach our team directly at szjyf@outlook.com.