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Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)
Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)
Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)
Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)
Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)
Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)
Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)

Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)

(1,870 reviews)

The Uniball Signo RT1 offers an exceptionally smooth writing experience for a 0.28 mm pen. Its tip design is edgeless and rounded, eliminating undue friction with the page. The pigment-based gel ink lays down a smooth, clear, sharp line and is waterproof, fade-resistant, feather-resistant, fraud-resistant and archival-quality. The Signo RT1’s body shape is designed to further enhance the feeling of smoothness: the comfortable rubberised grip melds stylishly into the barrel and the pocket clip attaches seamlessly to the push clip. The semi-transparent coloured barrel allows a glimpse of the ink, showing you when the ink is running low.

The Uniball Signo RT1 offers an exceptionally smooth writing experience for a 0.28 mm pen. Its tip design is edgeless and rounded, eliminating undue friction with the page. The pigment-based gel ink lays down a smooth, clear, sharp line and is waterproof, fade-resistant, feather-resistant, fraud-resistant and archival-quality. The Signo RT1’s body shape is designed to further enhance the feeling of smoothness: the comfortable rubberised grip melds stylishly into the barrel and the pocket clip attaches seamlessly to the push clip. The semi-transparent coloured barrel allows a glimpse of the ink, showing you when the ink is running low.

$1.81 - $46.43

in 19 offers

Colour:

Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Baby Pink
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Black
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Blue
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Green
Uni-Ball Signo Micro Gel Pen Light Blue
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Violet

Size:

0.5 mm
0.38 mm

Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)

$1.81

(1,870 reviews)

The Uniball Signo RT1 offers an exceptionally smooth writing experience for a 0.28 mm pen. Its tip design is edgeless and rounded, eliminating undue friction with the page. The pigment-based gel ink lays down a smooth, clear, sharp line and is waterproof, fade-resistant, feather-resistant, fraud-resistant and archival-quality. The Signo RT1’s body shape is designed to further enhance the feeling of smoothness: the comfortable rubberised grip melds stylishly into the barrel and the pocket clip attaches seamlessly to the push clip. The semi-transparent coloured barrel allows a glimpse of the ink, showing you when the ink is running low.

The Uniball Signo RT1 offers an exceptionally smooth writing experience for a 0.28 mm pen. Its tip design is edgeless and rounded, eliminating undue friction with the page. The pigment-based gel ink lays down a smooth, clear, sharp line and is waterproof, fade-resistant, feather-resistant, fraud-resistant and archival-quality. The Signo RT1’s body shape is designed to further enhance the feeling of smoothness: the comfortable rubberised grip melds stylishly into the barrel and the pocket clip attaches seamlessly to the push clip. The semi-transparent coloured barrel allows a glimpse of the ink, showing you when the ink is running low.

Colour:
Uni Ball Signo Knock Ballpoint Pen RT1 0.28mm Color, Lime Green (UMN15528.5)
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.38 mm, Baby Pink
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Black
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Blue
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Green
Uni-Ball Signo Micro Gel Pen Light Blue
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Red
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Violet

Size

0.28 mm
​

Price comparison

Last updated at 20/10/2025 20:19:46

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Price history

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Price history

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Specification

Body ColorLight Green
Capped or RetractableRetractable - Top Button
Clip MaterialPlastic
ClippableYes
Diameter - Grip10.6 mm

Price comparison

Updated about 14 hours ago
Amazon.com.au

$7.99

Skout Office Supplies

$1.81

Independent Office Solutions

$2.69

Officeworks

$2.99

Kiichin

$3.00

See 7 more history offers

Joom

$78.00

Low Stock
Bargains 4 U

$2.00

Low Stock
vanness1938.com

$5.29

Low Stock
Kooding

$4.52

Low Stock
Stationery Pal

$4.32

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Bunbougu

$2.80

Low Stock
creativeartandcraft.com.au

$23.87

Low Stock

Price history

​
​

Price history

​
​

Specification

Body ColorLight Green
Capped or RetractableRetractable - Top Button
Clip MaterialPlastic
ClippableYes
Diameter - Grip10.6 mm