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 Gel Ink Rollerball Pen 0.38mm Blue/Black Box of 12

$39.28
$39.28
RRP $41.25
Or 4 payments of $9.82 with
Add items to a quote for bulk pricing, approvals, or purchase orders.

SKU: UMUMN138BL/BK

UPC: 4902778926451

MPN: UMN138BL/BK

Blue/Black Gel Ink Pen With A 0.38mm Tip

This is the Blue/Black listing of the uni-ball Signo RT UMN-138 gel ink pen, with a 0.38mm tip as given by its Australian supplier.

uni-ball publishes no product page for the UMN-138, so this listing rests on the Mitsubishi Pencil Australia price list. It names the pen Signo RT, gives the tip as 0.38mm and the pack as a box of 12. Mega's earlier listing called it retractable, and the price list does not say what RT stands for, so we do not confirm the mechanism. We state no refill, no ink claim and no country of origin.

The supplier lists this code as Blue/Black. Whether that means one blue-black ink or a box split between blue and black pens is not published, so check the first pen before you hand them out. A 0.38mm tip as listed is a narrow line. It is sold by the box of 12, so a department is stocked in one order.

The black, blue and red versions sit alongside it in gel pens. The rest of the uni-ball range is at uni-ball, other pen types at pens, and notebooks, pads and the rest of the desk at writing supplies.

Often ordered together

  • Listed by the supplier as Blue/Black; the split is not published
  • Tip listed by the supplier as 0.38mm; uni-ball publishes no figure
  • Signo RT, as named in the Mitsubishi Pencil Australia price list
  • Gel ink pen, from uni-ball's Signo gel range; the mechanism and ink details are not published
  • Pack of 12 per the supplier price list
  • Sold by the box of 12
  • Forms and correspondence in a dark blue or black line
  • Small handwriting in notes and minutes
  • Margin notes and annotation on printed pages
  • Departments and schools that issue pens by the box

Shipping

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 or visit our shipping page.

Delivery Times

Melbourne, Sydney, Brisbane, Adelaide — 1 to 3 business days
Perth — 1 to 5 business days
Regional & Outer Areas — 3 to 7 business days

Returns

If you have questions about returns, please contact us or visit our returns page for full details.

Specifications

Brand: uni-ball

Range: Signo RT

Manufacturer Code: UMN-138

Mega Code: UMUMN138BL/BK

Colour: Blue/Black (named in the supplier's price list; uni-ball publishes no page, so the split between blue and black is not published)

Tip Size: 0.38mm, as described in the Mitsubishi Pencil Australia price list; uni-ball publishes no page for this model

Ink Type: Gel ink (Signo is uni-ball's gel range; not confirmed on a page for this model)

Mechanism: Not confirmed. The price list says RT, Mega's earlier listing called it retractable, and uni-ball publishes no page

Refill: Not stated. uni-ball publishes no refill code for this model

Ink Resistance: Not published

Pack: Box of 12

Barcode: 4902778926451

Country Of Origin: Not published by the manufacturer

Primary Distribution Centre

Factory 5, 12 Greenway Drive
Tweed Heads South NSW 2486

ABN 18 634 002 609

Get directionsContact us

FAQs

The Mitsubishi Pencil Australia price list describes it as 0.38mm. uni-ball publishes no page for this model, so we cannot confirm the figure from the manufacturer.
That is not published. The price list and Mega's earlier listing both give the colour as Blue/Black, and neither says whether the box holds blue-black pens or a split of blue and black pens.
We cannot confirm one. The price list calls the pen Signo RT and does not say what RT stands for, and Mega's earlier listing called it retractable. uni-ball publishes no page for the UMN-138.
uni-ball does not say. The RT1 has its own page under a different model code, and we make no claim that the two are related.
We do not state one. uni-ball publishes no refill code for this model. Mega's earlier listing named the UMR-85, but the price list describes the UMR-85 as the refill for the UMN-152 Micro 0.5mm, so we do not pair it with this pen.
uni-ball publishes no page for this model and no ink resistance claim, so we make none.
A box holds 12 pens, per the Mitsubishi Pencil Australia price list.
Not one we can attach. uni-ball's safety data sheet page lists 21 documents and none is named for this model, so we do not state a hazard classification for it.

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.