Refresh your favorite pen with the Uni-ball One UMR-05S Refill – 0.5 mm – Blue Black, designed for Uni-ball One, One F, and One P gel pens. This refill features Uni’s advanced pigment-based gel ink, delivering deep, saturated color that’s resistant to water, fading, and smudging—even on recycled paper.
The 0.38 or 0.5 mm needle-point tip ensures clean, consistent lines—perfect for daily writing, journaling, note-taking, or sketching. The blue-black ink adds a professional touch, offering a subtle alternative to plain black while still maintaining legibility and style.
Key Features:
Compatible with Uni-ball One, One F, and One P gel pens
0.5 mm tip – precise and smooth for all writing needs
Blue black pigment ink – bold, fade-resistant, and waterproof
Writes clearly on both standard and recycled paper
Easy to replace for sustainable pen use
Made in Japan – quality engineering and ink technology
Stay sharp and stylish—upgrade your Uni-ball One pen with this reliable and richly pigmented blue black refill.
Free shipping $35+ Domestic and $200+ International
Secure online payment
Free Returns
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Delivery & Returns
Delivery & Returns
Delivery Information
Orders are processed within 10 business days (excluding weekends and holidays). Shipping costs are calculated at checkout, and delivery times vary depending on your location.
Once your order has been shipped, you'll receive a confirmation email with tracking information.
We also offer international shipping. Please note that any customs duties, taxes, or import fees are the responsibility of the customer.
