# uni-ball UMN-S-05 Retractable Gel Rollerball Pens, 0.5 mm, Pack of 8

Pack: uni-ball UMN-S-05 pens are retractable gel rollerballs with fine 0.5 mm lines and eight assorted ink colours in white barrels. The click-action design avoids a separate cap, while the colour range suits writing, journaling and craft work.

- [Original product page](https://bargainpostbox.co.uk/product/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [View offer](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: uni-ball
- Model: UMN - S - 05
- Category: Office & Stationery > Stationery & Writing
- Price: 5.94 GBP
- Previous price: 6.99 GBP
- Discount: 15%
- Price checked: 2026-11-13T06:04:27.249Z
- Rating: 4.5 / 5
- Reviews: 79

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Eight retractable pens, each with a white barrel and a different listed ink colour: Black, Blue, Sky Blue, Green, Yellow, Red, Pink and Light Pink.
- The 0.5 mm fine point is presented for neat writing, while retractable operation means there is no cap to remove or replace.
- The listing describes a ribbed grip, metal clip and a compact barrel for carrying or use in a stationery collection.
- Gel ink is described as water-based, with the listing claiming vivid colour and a consistent line.

## Pros

- Eight distinct ink colours offer a ready-made palette for colour-coded notes and creative work.
- Retractable tips avoid loose caps and make the pens quick to use.
- Fine 0.5 mm line size is suited to smaller handwriting and detailed colouring.

## Specifications

### Identity
- Brand: uni-ball
- Model: UMN - S - 05
- Pen type: Roller Ball Pen
- Ink base: Water
### Writing and design
- Line size: 0.5 Millimeters
- Point type: Fine
- Closure: Retractable
- Grip: Ribbed
- Body shape: Cylindrical
- Colour: Multicolor
- Ink colour: Assorted
- Recommended uses: Colouring, Writing
- Handedness: Ambidextrous
### Dimensions and installation
- Dimensions listed: 15 x 8.8 x 1.6 centimetres
- Weight listed: 0.08 Kilograms
### Materials and protection
- Material listed: Metal, Plastic

## A good fit for

- People who want several ink colours for notes, journaling, scrapbooking or crafts.
- Buyers who prefer a fine-point retractable pen over a capped design.

## Less suited to

- Anyone seeking a single-colour refill set or a broader, bolder line than the listed 0.5 mm point.

## Customer feedback

Customer feedback describes the pens as good quality and highlights the colours, with yellow and green singled out as particularly saturated. This aligns with the set's listed eight-colour range and makes it relevant for colour-coded notes or crafts, though colour preference is subjective. The rating distribution is mostly five-star but includes lower ratings, so experiences are not uniformly positive.
- Positive themes: Customers describe the pens as good quality.
- Positive themes: Customers praise the range of colours, with yellow and green noted as particularly saturated.

## Frequently asked questions

### How many pens are in the set?
The listing describes a pack of eight, with black, blue, sky blue, green, yellow, red, pink and light pink ink.
### What line size do these pens have?
The listed line size is 0.5 Millimeters, described as a fine point.
### Are the pens capped?
They are listed as retractable, so the writing tip is operated without a separate cap.

## Alternative options

- [uni-ball EYE UB-157 Rollerball Pens 0.7mm Tip Pack of 6 Essentials Ink \| Fade, Water & Chemical Resistant Ink, Smooth Consistent Flow, Acid-Free Formula, Secure Click-Close Cap](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [UIXJODO Gel Pens, 5 Pcs 0.5mm Black Ink Pens Fine Point Smooth Writing Pens with Silicone Grip, High-End Series Metal Clip Retractable Pens \(5 Pcs Morandi\)](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [uni-ball EYE UB-157 0.7mm Tip Rollerball Pen - Multicolour \(Pack of 10\) \| Fade, Water & Chemical Resistant Ink, Smooth Consistent Flow, Acid-Free Formula, Secure Click-Close Cap](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [uni-ball Eye Micro UB-150E Gel Ink Pen - 0.5 mm - In Envelope Packaging \(Pack of 6, Black\)](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [uni-ball Signo Pen - UM-153 Broad Metallic Gel Ink Rollerball - Metal 1.0mm Tip Nib - Rubber Grip - In Envelope Gift Packaging \(Pack of 3, White\)](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [uni-ball Jetstream Sport Ballpoint Pens, 1 mm Tip, Black \(8-Pack\) \| Fast-Drying Hybrid Ink, Ergonomic Grip, Designed for Left-Handers, Ideal for School & Office Use](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [uni-ball Gel Impact Rollerball Gel Pens, 1 mm, Black \(8-Pack\) \| Bold, Smooth Writing, Fast-Flow Gel Ink, Comfortable Grip, Fade Resistant Super Ink](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [UIXJODO Gel Pens, 5 Pcs 0.5mm Black Ink Pens Fine Point Smooth Writing Pens with Silicone Grip, High-End Series Metal Clip Retractable Pens \(5 Pcs Vintage\)](https://bargainpostbox.co.uk/visit/uixjodo-vintage-black-gel-pens)
- [uni-ball Eye Micro UB-150E Gel Ink Pen - 0.5 mm - In Envelope Gift Packaging \(Pack of 4, Mixed\)](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [uni-ball Signo Gel Impact Pens, 0.7 mm, Black \(3-Pack\) \| Bold, Smooth Writing, Fast-Flow Gel Ink, Ergonomic Grip, Water-Resistant, Ideal for School & Office Use](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [uni-ball Gel Impact Rollerball Pens, 1.0 mm, Black \(5-Pack + 1 Free Eye\) \| Smooth Writing Experience, Ideal for Daily Use, Bright Black Ink, Easy Grip Design](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [uni-ball Signo Pen - UM-153 Broad Metallic Gel Ink Rollerball - Metal 1.0mm Tip Nib - Rubber Grip - In Envelope Gift Packaging \(Pack of 3, Bronze\)](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)

## Add-ons

- [uni-ball One Gel Pens, 0.7 mm, Rollerball Tip, Black \(3-Pack\) \| Bold, Smooth Writing, Comfortable for Long Sessions, Consistent Ink Flow, Ideal for Home & Office Use](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)
- [uni-ball Zento Gel Ink Ballpoint Pen - Black - Smooth Medium Nib - Coloured Japanese Pens - Discreet Colours \(Pack of 4\)](https://bargainpostbox.co.uk/visit/uni-ball-umn-s-05-retractable-gel-rollerball-pens-8-pack)

## Images

![uni-ball UMN-S-05 Retractable Gel Rollerball Pens, 0.5 mm, Pack of 8 — 1](https://bargainpostbox.co.uk/i/LaquG9huOlbUVlma5iV_Em1twmmYYqebe0E7E1P26nFM9wfCqEcQDvjm3gtUQHJtG4DrFiMXq4K2CFITnp60714cITZsMwk7kzhgS46XyUuBlXayX7TNIDMS.jpg)

![uni-ball UMN-S-05 Retractable Gel Rollerball Pens, 0.5 mm, Pack of 8 — 2](https://bargainpostbox.co.uk/i/Y1SNX15MQLRBlHLPKX_3a3eTaiwXjRPtnt96MYpnNyeJ-oaGhcvJh2xmlNMNsSpNm6NAelvDrL-UHKuU7GarFF5_xObAMGIUni7bp2Y-o9GhOJXgY1ylWcLI.jpg)

![uni-ball UMN-S-05 Retractable Gel Rollerball Pens, 0.5 mm, Pack of 8 — 3](https://bargainpostbox.co.uk/i/JDm2o2o_NeL0QFzhNQ5bIVPVNaVudMMXARNdpfyLH88AIB2GGqysie1QSr37b-Qmh8jt-2KqhHPe8m4m11dBqxsYOLLscUGb-SZYBbVd9HnGikuXJ69jt59c.jpg)

![uni-ball UMN-S-05 Retractable Gel Rollerball Pens, 0.5 mm, Pack of 8 — 4](https://bargainpostbox.co.uk/i/MQQlh3eF2Dnu_r2j9iCnPDUlmHg476Gbghh_ALOYrT7gBW4bLNZ90ttP0Xr3kbXXFvZ_RRMttsSHX-3lJ9bto3OylpVJBLdcXTzmk-0eEExllsC3PziFdXhJ.jpg)

![uni-ball UMN-S-05 Retractable Gel Rollerball Pens, 0.5 mm, Pack of 8 — 5](https://bargainpostbox.co.uk/i/-n6nLkHRG90eGm15bS6gVmFZjUjYADkq5zkQcQzt1O3ltftzyaB8MA3sJU3h5dQLTxWYDw17VdoTd0A_QF_R8wWteFPHEGhD81nA2jBbRrH4G_vLgJ5yiASK.jpg)