Uni-ball Signo UM-151 Gel Ink Pen - 0.5 mm - Mandarin Orange

$2.50
In stock and ships within 1 business day.
4.6 (5 reviews)
DescriptionSpecifications
Uni-ball Signo gel ink pens are known for their smooth writing and exceptional ink quality. And, to everyone's delight, there is a sea of colors and tip sizes to choose from. Find the perfect pen for any task, whether it's writing meticulous notes, marking your calendar, or decorating your scrapbook with colorful captions.

Everything about this pen, from its solid construction to its carefully-formulated ink, ensures a wonderful writing experience. The sturdy tip does not bend or break, even with heavy-handed use. The pigment-based ink flows smoothly and is waterproof, fade-resistant, and feather-resistant. Much of that is due to special viscous properties of the ink. The ink is viscous while in the barrel, but as it passes through the pen tip during writing, the viscosity drops. This results in smooth ink flow. Immediately after it hits the paper, the ink returns to its viscous state, which prevents feathering. You are left with beautiful clean lines that you can enjoy for a long time!

This is the Mandarin Orange pen. The close-up tip photo features the Black pen.

Model NumberUNI UM15105.38
Weight0.4 ounces
ManufacturerUni
Body Color Clear
Body Material Plastic
Clip Material Plastic
Clippable Yes
Color Set No
Diameter - Grip 10.2 mm
Diameter - Max 10.2 mm
Grip Color Orange
Grip Material Rubber
Ink Refillable Yes
Length - Capped 13.8 cm
Length - Posted 15.2 cm
Length - Uncapped 13.1 cm
Mechanism Capped
Pre-Installed Ink Color Mandarin Orange
Tip Length 4.3 mm
Tip Material Metal
Tip Size 0.5 mm
Tip Type Conical

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Customer Reviews

The Signo UM-151 has...
June 16, 2012
Verified Purchase
The Signo UM-151 has quickly become my everyday, go-to pen. The ink flows incredibly smooth, there is no scratchiness, and the ink dries quickly with no bleed on every paper I have used so far. I chose the 0.5mm simply because I had some experience with a store-bought Signo in the 0.38mm size, and I found it a little scratchy for my taste. Obviously, this is a personal choice. I know that many of the reviewers here love the ultra-fineness of the 0.38mm.

I will tell you that the 0.5mm in this pen is unlike any 0.5mm I have used that was purchased from a store in the US. This pen produces a finer line without the scratchiness I usually associate with a fine, metal point. The grip is very comfortable, and this pen has been a joy to write with, even when taking copious notes as I do with my job.

When it comes to color, I have to admit, I love this orange. Is it the most professional color, no. However, I'm not handing my notes into my boss to be graded. I use this color in combination with two others to color code my notes. Also use this to underline and highlight material. Fantastic, bright, yet deep, orange color.

I will definitely be ordering more of these, as I anticipate using them often.
2 people found this helpful
Love these Uni Ball Signos....
December 5, 2013
Verified Purchase
Love these Uni Ball Signos. They are chemically resistant and work well in challenging (earth) environments.
1 person found this helpful
snowflakeschance
I love this shade of...
March 28, 2015
Verified Purchase
I love this shade of orange - get it! You won't regret it. However, this pen tends to blob/bubble at the tip causing the start of my words to have a big dot of ink. This happens a lot more with this colors than the Bordeaux Black that I got.
craftyisliz
The pen and ink quality...
December 3, 2014
Verified Purchase
The pen and ink quality are great. I find the Mandarin Orange color to be a bit hard to see on white paper.
Absolutely love these...
November 9, 2014
Verified Purchase
Absolutely love these pens. Bright ink, and nice smooth writers!
KeikiRN425
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