Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12
Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12
Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12
Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12
Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12
Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12
Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12
Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12
Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12
Uniball

Uni-Ball Signo RT UMN-138 Retractable Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12

$36.71
$36.71
RRP $41.25
Add items to a quote for bulk pricing, approvals, or purchase orders.

SKU: UMUMN138BL/BK

UPC: 4902778926451

MPN: UMN138BL/BK

Ultra-fine retractable gel for the finest gel writing available

The Uni-Ball Signo RT UMN-138 is a retractable ultra-fine gel ink pen delivering smooth Signo gel at a hairline-thin 0.38mm tip, giving writers who need the finest possible gel line the convenience of a click mechanism and no cap to lose.

At 0.38mm, the Signo RT writes a near-hairline line that is significantly finer than the standard 0.7mm Signo, making it the choice for compact note-taking, annotation in tight margins, and any writing where maximum precision from a gel pen is the priority. The retractable click mechanism means no cap to remove or misplace, and the blue/black ink colour is a sophisticated, rich shade for professional writing. Supplied in a box of 12.

  • Ultra-fine 0.38mm tip - the finest gel ink line in the Signo range
  • Retractable click mechanism - no cap to remove or lose
  • Smooth Signo gel ink for vivid, fast-drying performance
  • Blue/black ink - a sophisticated choice between navy and black
  • Compatible with UMR-85 refills
  • Box of 12
  • Ultra-fine note-taking in compact notebooks and narrow margins
  • Detailed annotations requiring the finest gel line available
  • Professional correspondence with a sophisticated blue/black ink
  • Everyday writing using a retractable gel pen for convenience
  • Study and work environments where fine-line precision matters

Shipping is kept simple with flat rates for selected areas and free shipping where applicable. Large, bulky, rural or out-of-area orders may require additional freight, and our team will contact you if this applies. For a more specific estimate, simply add this product to a quote.

Specifications

Brand: Uni-Ball

MPN: UMN-138

SKU: UMUMN138BL/BK

Pen Type: Retractable gel ink rollerball

Tip Size: 0.38mm (Ultra Fine)

Ink Colour: Blue/Black

Ink Type: Gel ink

Compatible Refill: UMR-85

Pack Quantity: Box of 12

EAN: 4902778045954

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Based around the Gold Coast, our customer support team brings deep office supplies knowledge, with most members having more than 10 years of industry experience. We are more than customer service agents. We are experienced office supply experts ready to help. Contact us below.

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Shipping & Delivery

Delivery time depends on your location, the size of your order, and the shipping option selected at checkout. For in-stock items, standard metro delivery in QLD, NSW and VIC is usually 1 to 7 business days. South Australia, Tasmania, Western Australia and the Northern Territory are generally 3 to 12 business days. Express delivery for eligible parcels under 3kg is usually 1 to 4 business days in QLD, NSW, ACT and VIC. Delivery estimates apply to in-stock items only and may vary due to carrier conditions or delays.

If you need to make a change to your order, please contact our team as soon as possible. Once an order has been processed or dispatched, changes may no longer be possible. You can contact us through our Contact Us page for assistance.

Mega Office Supplies ships orders Australia wide and occasionally internationally. The best avenue would be to contact us so we can customise a specific quote for you. Please note that associated international duties, taxes and levies will be the responsibility of the customer.

Returns, Refunds & Replacements

Mega Office Supplies accepts change-of-mind returns for unopened and unused products within 14 days from the invoice date, provided the item is returned in its original packaging and in resalable condition. Original shipping costs are not refundable, return shipping is the customer’s responsibility, and a restocking fee may apply depending on the product type and supplier. Some items, including electronics, assembled or installed furniture, food, beverages, medicines, custom-made products, and certain bulk or special-order items, are not eligible for return unless required under Australian Consumer Law.

If your order arrives faulty, damaged, or incorrect, please contact Mega Office Supplies as soon as possible. Where required under Australian Consumer Law, a repair, replacement, or refund will be offered. In these cases, Mega Office Supplies will cover reasonable return shipping costs, and photographic evidence may be requested to help process the claim. Items should be reported within a reasonable timeframe after delivery.

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