Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10
Uniball

Uni-Ball Signo RT1 UMN155-038 Gel Ink Pen 0.38mm Black Box of 10

$21.07
$21.07
RRP $23.87
Add items to a quote for bulk pricing, approvals, or purchase orders.

SKU: UMUMN155-038BK

UPC: 34902778142654

MPN: UMN155-038BK

Ultra-fine retractable gel for precise, compact writing

The Uni-Ball Signo RT1 UMN-155 in 0.38mm black delivers smooth Signo black gel at a hairline-thin tip with the retractable convenience of the RT1 click mechanism, producing the finest retractable gel line in the Signo RT1 range.

At 0.38mm, the Signo RT1 writes a near-hairline line that is significantly finer than the standard 0.5mm, making it the choice for compact note-taking, fine annotations, and writers who prefer the absolute finest gel tip in a retractable pen. Compatible with UMR-85 refills. Supplied in a box of 10.

  • Ultra-fine 0.38mm tip - the finest RT1 line available
  • Retractable click mechanism - no cap to remove or lose
  • Smooth Signo black gel ink - vivid and fast-drying
  • Practical for compact note-taking and fine annotation
  • Compatible with UMR-85 refills
  • Box of 10
  • Ultra-fine note-taking in compact notebooks and narrow margins
  • Detailed annotations where the finest black retractable gel is needed
  • Everyday professional writing where maximum precision is the priority
  • Students and writers who prefer the finest gel tip in a retractable pen
  • General use where 0.38mm ultra-fine and click convenience both matter

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-155-038

SKU: UMUMN155-038BK

Pen Type: Retractable gel ink rollerball

Tip Size: 0.38mm (Ultra Fine)

Ink Colour: Black

Ink Type: Gel ink

Compatible Refill: UMR-85

Pack Quantity: Box of 10

EAN: 4902778150443

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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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