Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Blue Black

$1.65
In stock and ships within 1 business day.
4.7 (28 reviews)
DescriptionSpecifications
Uni Signo RT gel ink pens contain water-based pigment gel ink and feature a retractable 0.38 mm gel ink roller ball pen, rubber grip, and a steel point for strength.

Super practical and affordable, the Signo RT pens have been a long time tried and true favorite of JetPals.

Model NumberUNI UMN103.64
Weight0.4 ounces
ManufacturerUni
Body Color Dark Blue
Body Material Plastic
Clip Material Plastic
Clippable Yes
Color Set No
Diameter - Grip 9.6 mm
Diameter - Max 10.6 mm
Grip Color Dark Blue
Grip Material Rubber
Ink Characteristics Waterproof
Ink Refillable Yes
Length - Extended 13.8 cm
Length - Retracted 13.9 cm
Mechanism Retractable
Pre-Installed Ink Color Blue Black
Tip Length 4.4 mm
Tip Material Metal
Tip Size 0.38 mm
Tip Type Conical

Frequently Bought Together

Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Blue Black - UNI UMN103.64
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Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Black - UNI UMN103.24
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Uni UMR-83 Gel Ink Pen Refill - 0.38 mm - Blue Black - UNI UMR83.64
Total Price: $4.65
This item: Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Blue Black - $1.65

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Customer Reviews

I don't think there is...
November 3, 2010
Verified Purchase
I don't think there is a material difference between the ink output of the RT/DX lines. Other than the obvious ink capacity of each refill, I prefer the retractability, grip and design in general of the RT. Definitely one of my favourite gel pens - it writes a lot better on 'normal' paper than the Hi-Tec-C line, although I still prefer Hi-Tec-C 0.3mm tips if I have better quality notebooks to use.
3 people found this helpful
lpmusicmanlp
I am obsessed with this...
February 9, 2013
Verified Purchase
I am obsessed with this pen! I bought a whole box of them (10)!!! The fine writing line is perfect for fitting a lot of information in a small space. Especially filling out forms. I used to be a business person and was very strict about using black ink. Whatever. I then switched to blue ink feeling it was more expressive. The blue/black ink gives a perfect balance of color.
2 people found this helpful
This is a decent pen....
September 22, 2011
Verified Purchase
This is a decent pen. I like the look and feel of the Sarasas better, and I ended up preferring their 0.5mm tip to this one's 0.38 point... it's just too fine for me. Better suited for drawing than writing in my opinion.
2 people found this helpful
This has got to be my...
January 8, 2015
Verified Purchase
This has got to be my favorite pen line I have ever used. The ink is super smooth and thin, as well as the body being very light and slim to the point where I could carry nearly 5 in each pocket barely feeling it. However for this color, I feel as if there is just not enough ink to last me more than a month. I am ordering more, and hoping it doesn't have the same problem
1 person found this helpful
BruhBruhsterson
I LOVE this pen! It...
February 12, 2013
Verified Purchase
I LOVE this pen! It writes so smoothly and the ink is fantastic. Sometimes I just stare at what I've written because it looks so good!
1 person found this helpful
llmardock
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