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Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red

Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red

(1,870 reviews)

To reduce the frictional resistance between the pen tip and the paper, the corners at the tip of the tip have been eliminated to achieve a smooth writing feel. Moreover, the stainless steel tip with excellent toughness and the spring tip mechanism which prevents the direct current of ink are adopted. The ink composition has been reviewed to improve the smoothness while maintaining the vividness of the ink color and the ability to draw ultra-fine lines without bleeding. Uses a dark, non-bleeding water-based pigment ink. It also has excellent water resistance and light resistance. A new design with no noticeable joint between the grip and the shaft. The simple, smooth and flowing shape is attractive. In addition, the entire toe shaft has a rubber grip that is easy to grip.

To reduce the frictional resistance between the pen tip and the paper, the corners at the tip of the tip have been eliminated to achieve a smooth writing feel. Moreover, the stainless steel tip with excellent toughness and the spring tip mechanism which prevents the direct current of ink are adopted. The ink composition has been reviewed to improve the smoothness while maintaining the vividness of the ink color and the ability to draw ultra-fine lines without bleeding. Uses a dark, non-bleeding water-based pigment ink. It also has excellent water resistance and light resistance. A new design with no noticeable joint between the grip and the shaft. The simple, smooth and flowing shape is attractive. In addition, the entire toe shaft has a rubber grip that is easy to grip.

$1.81 - $46.43

in 19 offers

Colour:

Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Baby Pink
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Black
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Blue
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm - Green
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Light Blue
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm - Lime Green
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Violet

Size:

L
0.5 mm
0.28 mm
O

Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red

$1.81

(1,870 reviews)

To reduce the frictional resistance between the pen tip and the paper, the corners at the tip of the tip have been eliminated to achieve a smooth writing feel. Moreover, the stainless steel tip with excellent toughness and the spring tip mechanism which prevents the direct current of ink are adopted. The ink composition has been reviewed to improve the smoothness while maintaining the vividness of the ink color and the ability to draw ultra-fine lines without bleeding. Uses a dark, non-bleeding water-based pigment ink. It also has excellent water resistance and light resistance. A new design with no noticeable joint between the grip and the shaft. The simple, smooth and flowing shape is attractive. In addition, the entire toe shaft has a rubber grip that is easy to grip.

To reduce the frictional resistance between the pen tip and the paper, the corners at the tip of the tip have been eliminated to achieve a smooth writing feel. Moreover, the stainless steel tip with excellent toughness and the spring tip mechanism which prevents the direct current of ink are adopted. The ink composition has been reviewed to improve the smoothness while maintaining the vividness of the ink color and the ability to draw ultra-fine lines without bleeding. Uses a dark, non-bleeding water-based pigment ink. It also has excellent water resistance and light resistance. A new design with no noticeable joint between the grip and the shaft. The simple, smooth and flowing shape is attractive. In addition, the entire toe shaft has a rubber grip that is easy to grip.

Colour:
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Baby Pink
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Black
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Blue
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm - Green
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Light Blue
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm - Lime Green
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Violet

Size

0.38 mm
​

Price comparison

Last updated at 24/10/2025 12:52:12

Officeworks

$2.99

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Uniball Uni-Ball Signo RT1 Retractable 0.5mm Gel Pen Black

Delivery between 28 Oct – 6 Nov $7.95

Amazon.com.au

$7.99

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Uni Ball Signo Knock Ballpoint Pen RT1 0.38mm Color, Black (UMN15538.24)

Delivery $7.99

IRO stationery NZ

$4.84

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Uni-ball Signo RT1 UMN-155 Gel Pen - 0.38 mm Orange

Delivery $20.00

Cloth & Paper

$6.00

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Uni-ball Signo RT1 Gel Pen | 0.5mm - Black

pensworld.com.au

$39.95

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UNIBALL Signo RT1 UMN155 0.38mm - 10x BLACK

Free delivery

Japan With Love

$3.00

Go to store


Mitsubishi Pencil Gel Ballpoint Pen Uni-Ball Signo Rt1 0.38 Black Japan Umn15538.24

Delivery between 31 Oct – 3 Nov $11

Kiichin

$6.00

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Mitsubishi Pencil Uni Ball Signo RT1 Knock Ballpoint Pen 0.5mm Blue Black

Delivery $13

Mega Office Supplies

$20.46

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Uni-Ball Signo RT1 Gel Ink Rollerball Pen 0.5mm Green Box Of 10

Delivery between 29 Oct – 7 Nov $16.50

LWT

$16.50

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uni-ball Signo RT1 .5 Blk Pk10

Delivery $16.50

Temu

$21.61

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5pcs Signo RT1 Retractable Gel Ink Pens - Ultra Micro Point 0, 28mm, Black Rubber Grip, Smooth Writing, Durable & Precise for Office, School, and Art

Free delivery

See 17 historical offers

papericot.com

$3.50

Out of Stock


Uni-ball Signo RT1 Gel Pen - 0.38 mm Blue-black

Delivery $6.50

Stationery Pal

$4.33

Out of Stock


Uni-ball Signo RT1 UMN-155NC Gel Pen - 0.5mm - Light Gray - Black Ink

60-day returns

Dokodemo

$3.80

Out of Stock


Mitsubishi Pencil uni-ball Signo UMN-155 0.38 mm Black

Delivery between 27 Oct – 2 Nov $35.71

vanness1938.com

$5.30

Out of Stock


Uni-Ball Signo RT .38mm Ballpoint Pen- Blue

Bunbougu

$2.80

Out of Stock


Uni-ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Violet

Delivery between 28 Oct – 5 Nov $6.85

Cult Pens

$6.65

Out of Stock


Uni-Ball Signo Umn-155 Rt1 0.38mm Gel Pen - Violet / Single

Delivery $25

Kooding

$4.53

Out of Stock


ALPHA Gel Pen Signo Knock Type Umn-155 0.28mm 1 Piece Uni

Delivery $24.20

office-japan.jp

$1.24

Out of Stock


Office Japan, a mail order store for stationery and office supplies, Mitsubishi UMN-155N-05 Lime Green 5 UMN155N05.5 4902778142707

Delivery $27.17

Harajuku Culture Japan

$21.07

Out of Stock


Uni Gel Ink Ballpoint Pen Uni-Ball Siguno RT1 ‐ 0.28mm Violet

Delivery $44.34

betteroffice.store

$16.10

Out of Stock


SP- PEN UNI RB SIGNO UMN155 RETRACTABLE 0.38MM VIOLET | Better Office Supplies - VIP Pricing Now Available - Sign Up Today!

Delivery between 28 Oct – 5 Nov $13

awesomepens.co.uk

$6.50

Out of Stock


* Uni-Ball Signo UMN-155 RT1 0.38mm Gel Pen

Delivery $6.10

Ubuy

$26.57

Out of Stock

creativeartandcraft.com.au

$23.87

Out of Stock

Joom

$91.00

Out of Stock

Bargains 4 U

$2.00

Out of Stock

cultpens.com

$6.66

Out of Stock

bunbougu.com.au

$2.80

Out of Stock

Price history

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Price history

​
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Price comparison

Updated 6 days ago
Officeworks

$2.99


Uniball Uni-Ball Signo RT1 Retractable 0.5mm Gel Pen Black

Delivery between 28 Oct – 6 Nov $7.95

Amazon.com.au

$7.99


Uni Ball Signo Knock Ballpoint Pen RT1 0.38mm Color, Black (UMN15538.24)

Delivery $7.99

IRO stationery NZ

$4.84


Uni-ball Signo RT1 UMN-155 Gel Pen - 0.38 mm Orange

Delivery $20.00

Cloth & Paper

$6.00


Uni-ball Signo RT1 Gel Pen | 0.5mm - Black

pensworld.com.au

$39.95


UNIBALL Signo RT1 UMN155 0.38mm - 10x BLACK

Free delivery

See 17 historical offers

papericot.com

$3.50

Out of Stock

Uni-ball Signo RT1 Gel Pen - 0.38 mm Blue-black

Delivery $6.50

Stationery Pal

$4.33

Out of Stock

Uni-ball Signo RT1 UMN-155NC Gel Pen - 0.5mm - Light Gray - Black Ink

60-day returns

Dokodemo

$3.80

Out of Stock

Mitsubishi Pencil uni-ball Signo UMN-155 0.38 mm Black

Delivery between 27 Oct – 2 Nov $35.71

vanness1938.com

$5.30

Out of Stock

Uni-Ball Signo RT .38mm Ballpoint Pen- Blue

Bunbougu

$2.80

Out of Stock

Uni-ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Violet

Delivery between 28 Oct – 5 Nov $6.85

Cult Pens

$6.65

Out of Stock

Uni-Ball Signo Umn-155 Rt1 0.38mm Gel Pen - Violet / Single

Delivery $25

Kooding

$4.53

Out of Stock

ALPHA Gel Pen Signo Knock Type Umn-155 0.28mm 1 Piece Uni

Delivery $24.20

office-japan.jp

$1.24

Out of Stock

Office Japan, a mail order store for stationery and office supplies, Mitsubishi UMN-155N-05 Lime Green 5 UMN155N05.5 4902778142707

Delivery $27.17

Harajuku Culture Japan

$21.07

Out of Stock

Uni Gel Ink Ballpoint Pen Uni-Ball Siguno RT1 ‐ 0.28mm Violet

Delivery $44.34

betteroffice.store

$16.10

Out of Stock

SP- PEN UNI RB SIGNO UMN155 RETRACTABLE 0.38MM VIOLET | Better Office Supplies - VIP Pricing Now Available - Sign Up Today!

Delivery between 28 Oct – 5 Nov $13

awesomepens.co.uk

$6.50

Out of Stock

* Uni-Ball Signo UMN-155 RT1 0.38mm Gel Pen

Delivery $6.10

Ubuy

$26.57

Out of Stock
creativeartandcraft.com.au

$23.87

Out of Stock
Joom

$91.00

Out of Stock
Bargains 4 U

$2.00

Out of Stock
cultpens.com

$6.66

Out of Stock
bunbougu.com.au

$2.80

Out of Stock

Price history

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Price history

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