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

by Uni
  4.6  31 reviews | Write a Review
$1.65

Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Black - UNI UMN103.24
  • Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Black - UNI UMN103.24
  • Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Black - UNI UMN103.24
  • Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Black - UNI UMN103.24
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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.


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Frequently Bought Together
Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Black - UNI UMN103.24+Uni UMR-83 Gel Ink Pen Refill - 0.38 mm - Black - UNI UMR83.24
Total Price: $3.00
This item: Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Black - $1.65



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Doctors & Nurses

Specs
Model NumberUNI UMN103.24
Weight0.4 ounces
Body Color Black
Body Material Plastic
Clip Material Plastic
Clippable Yes
Color Set No
Diameter - Grip 9.6 mm
Diameter - Max 10.6 mm
Grip Color Black
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 Black
Tip Length 4.4 mm
Tip Material Metal
Tip Size 0.38 mm
Tip Type Conical

Reviews


June 8, 2011
While the 0.38mm tip...
Verified Purchase
While the 0.38mm tip writes fine lines, I am rather disappointed in the ink reservoir. If you pay close attention, the inner diameter on the refill is much smaller than most normal refillable pens which explains why these pens have such a short lifespan. The inner diameter on this refill is 2mm (approximately 3/32”) whereas other pens, like the Zebra Sarasa or the Uni-ball Signo 0.5mm, have a much wider inner diameter. These pens have a 5mm (approximately 5/32”) inner diameter, resulting in 2.5 times more ink than the Signo 0.38mm RT. It’s a great price, especially for those who love super fine tips. Me? I’ll take the extra ink with a 0.5mm tip.

5 people found this helpful
 
January 18, 2012
To the guy who is complaining...
To the guy who is complaining about the reservoir size. It isn't that the .38 size has a smaller reservoir in particular, it's that the retractable signo's as a model have a smaller reservoir. Any size of signo DX models will have the same size reservoir. If you want .38 and still want a big reservoir go look at the .38 signo DXs. They also come in .28 and .5 btw. Anyways, the pen itself has been good to me as all the models of signo I've tried have been. Other than that sometimes not having to worry about a cap can be a good thing. Also, the grip is farther down the pen, which is better for me because I hold pens closer to the tip, which with the Signo DX model is pretty far up so I end up holding past the grip anyways.

4 people found this helpful
ken.y.hua
 
November 6, 2014
The best for folks with...
Verified Purchase
The best for folks with small handwriting. The nib is pretty durable and rarely produces globs of ink on the end. I work in a medical practice with paper charts which require HUGE amounts of writing. I have been using this pen exclusively for over two years and plan to continue.

 
November 5, 2014
Dark, fine, smooth. All...
Verified Purchase
Dark, fine, smooth. All the things I want in a gel pen.

 
November 1, 2014
I love these pens. I...
Verified Purchase
I love these pens. I enjoy writing and like the fine point tip. The order came very fast. JetPens is always fast to send the order and have a wonderful variety of writing utensils.



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