Last updated at 11/05/2026 09:19:13
Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Red (UMN15528.15)
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Stationery and office supplies mail order "Office Japan" Mitsubishi UMN-155N-28 Aka 15 UMN155N28.15 4902778142547
Delivery $27.88
Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Red
Delivery between 15–25 May $6.85
Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Red
Delivery between 15–25 May $6.85
Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Red
Delivery between 15–25 May $6.85
Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - New Red
Delivery $28.07
Uni Gel Ink Ballpoint Pen Uni-Ball Siguno RT1 ‐ 0.28mm Red
Delivery $40.65
| Body Color | Red |
| Capped or Retractable | Retractable - Top Button |
| Clip Material | Plastic |
| Clippable | Yes |
| Diameter - Grip | 10.6 mm |
Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Red (UMN15528.15)
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Stationery and office supplies mail order "Office Japan" Mitsubishi UMN-155N-28 Aka 15 UMN155N28.15 4902778142547
Delivery $27.88
Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Red
Delivery between 15–25 May $6.85
Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Red
Delivery between 15–25 May $6.85
Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Red
Delivery between 15–25 May $6.85
| Body Color | Red |
| Capped or Retractable | Retractable - Top Button |
| Clip Material | Plastic |
| Clippable | Yes |
| Diameter - Grip | 10.6 mm |
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Red
Meet the Uni-ball Signo RT1 Gel Pen, the writing tool designed to make your everyday writing tasks effortless and enjoyable. Its sleek design feels comfortable in your hand for those long writing sessions or quick jot-downs alike. No more accidental clicks in your pocket or bag either—the integrated pocket clip doubles as the push button, keeping it secure and functional wherever you go.What truly sets this pen apart is its pigment-based gel ink, which is not only beautifully smooth but also resistant to water, fading, and even check washing, making it ideal for everything from journaling to signing important documents. And thanks to the pen tip’s ingenious rounded "edgeless" design, you'll enjoy an effortlessly smooth glide across the page every single time. Whether you're jotting down quick thoughts, planning, or tackling detailed notes, this pen is built to keep up with you.Features: Pigment-based gel ink Acid-free, water-resistant, fraud-resistant, fade-resistant, and archival safe 0.5 mm conical nib Retractable with clip Rubber grip Listing is for one Uni-ball Signo RT1 Gel Pen, other pictured items not included.
Meet the Uni-ball Signo RT1 Gel Pen, the writing tool designed to make your everyday writing tasks effortless and enjoyable. Its sleek design feels comfortable in your hand for those long writing sessions or quick jot-downs alike. No more accidental clicks in your pocket or bag either—the integrated pocket clip doubles as the push button, keeping it secure and functional wherever you go.What truly sets this pen apart is its pigment-based gel ink, which is not only beautifully smooth but also resistant to water, fading, and even check washing, making it ideal for everything from journaling to signing important documents. And thanks to the pen tip’s ingenious rounded "edgeless" design, you'll enjoy an effortlessly smooth glide across the page every single time. Whether you're jotting down quick thoughts, planning, or tackling detailed notes, this pen is built to keep up with you.Features: Pigment-based gel ink Acid-free, water-resistant, fraud-resistant, fade-resistant, and archival safe 0.5 mm conical nib Retractable with clip Rubber grip Listing is for one Uni-ball Signo RT1 Gel Pen, other pictured items not included.
Meet the Uni-ball Signo RT1 Gel Pen, the writing tool designed to make your everyday writing tasks effortless and enjoyable. Its sleek design feels comfortable in your hand for those long writing sessions or quick jot-downs alike. No more accidental clicks in your pocket or bag either—the integrated pocket clip doubles as the push button, keeping it secure and functional wherever you go.What truly sets this pen apart is its pigment-based gel ink, which is not only beautifully smooth but also resistant to water, fading, and even check washing, making it ideal for everything from journaling to signing important documents. And thanks to the pen tip’s ingenious rounded "edgeless" design, you'll enjoy an effortlessly smooth glide across the page every single time. Whether you're jotting down quick thoughts, planning, or tackling detailed notes, this pen is built to keep up with you.Features: Pigment-based gel ink Acid-free, water-resistant, fraud-resistant, fade-resistant, and archival safe 0.5 mm conical nib Retractable with clip Rubber grip Listing is for one Uni-ball Signo RT1 Gel Pen, other pictured items not included.
Meet the Uni-ball Signo RT1 Gel Pen, the writing tool designed to make your everyday writing tasks effortless and enjoyable. Its sleek design feels comfortable in your hand for those long writing sessions or quick jot-downs alike. No more accidental clicks in your pocket or bag either—the integrated pocket clip doubles as the push button, keeping it secure and functional wherever you go.What truly sets this pen apart is its pigment-based gel ink, which is not only beautifully smooth but also resistant to water, fading, and even check washing, making it ideal for everything from journaling to signing important documents. And thanks to the pen tip’s ingenious rounded "edgeless" design, you'll enjoy an effortlessly smooth glide across the page every single time. Whether you're jotting down quick thoughts, planning, or tackling detailed notes, this pen is built to keep up with you.Features: Pigment-based gel ink Acid-free, water-resistant, fraud-resistant, fade-resistant, and archival safe 0.5 mm conical nib Retractable with clip Rubber grip Listing is for one Uni-ball Signo RT1 Gel Pen, other pictured items not included.
in 7 offers
The lowest price for Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Red right now is $1.06 at office-japan.jp, compared across 5 retailers.
The all-time low was $1.06 on 16 Apr 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 11 May 2026.
