Ohto PG-M05NP Gel Refill Guide | Size & Compatibility

Ohto PG-M05NP Gel Refill, a 98 mm ceramic roller gel refill with a 0.5 mm needlepoint tip for the Ohto GS02 and compatible pens.

Still unsure? Use the guide to find the right pen refill by size, shape, and compatibility.

Buy Ohto PG-M05NP Gel Refills

Buy Ohto PG-M05NP Gel Refills: Black

When buying an Ohto PG-M05NP Gel Refill, confirm the refill length, body shape, tip size, and pen compatibility before ordering. This is a 98 mm ceramic roller gel refill used in the Ohto GS02 and other compatible pens.

Quick Specs

Specification	Details
Manufacturer	Ohto
Refill Category	Gel refill
Refill Shape	Parker-style / G2-style gel refill
Product Family	Ohto Ceramic Roller Gel
Ink Type	Gel ink
Length	98 mm (3.86 in)
Diameter	5.8 mm
Body Material	Metal
Pressurized	No
Retractable Compatible	Yes, in compatible pens
Common Tip Sizes	0.5 mm
Common Ink Colors	Black

Ohto PG-M05NP Gel Refill Overview

The Ohto PG-M05NP Gel Refill is a ceramic roller gel refill designed for the Ohto GS02 and other compatible pens. It uses a 0.5 mm needlepoint tip with a ceramic writing ball, giving it a fine, smooth, and precise writing feel.

This refill is part of Ohto’s Ceramic Roller Gel lineup and is built with a metal body rather than a plastic barrel. Ohto lists the PG-M05NP at 98 mm long, which places it close to the Parker-style refill category, but the fit should still be confirmed before purchase.

The Ohto PG-M05NP Gel Refill is a good choice for writers who want a smooth gel refill with a fine point, quick-drying behavior, and a more premium metal refill body. It is especially relevant for Ohto GS02 users looking for the correct replacement refill.

Why Choose the Ohto PG-M05NP Gel Refill?

Choose the Ohto PG-M05NP Gel Refill if you want the correct replacement refill for the Ohto GS02 or a compatible pen that accepts this refill format. Its 0.5 mm needlepoint tip makes it useful for everyday notes, planner writing, small handwriting, and clean line control.

The ceramic roller gel design gives this refill a smoother feel than many standard oil-based ballpoint refills. It also provides a darker, more fluid line while keeping the fine control of a needlepoint tip.

Another advantage is the metal refill body. Compared with the plastic-bodied Ohto PG-105NP, the PG-M05NP is positioned as the longer-writing, more durable refill option within Ohto’s related gel refill lineup.

Writing Characteristics

The Ohto PG-M05NP Gel Refill uses gel ink with a 0.5 mm needlepoint ceramic writing tip. The result is a fine, smooth line with more saturation than a traditional ballpoint refill.

The writing feel is controlled rather than overly broad. This makes it a strong option for users who like gel ink but do not want a thick or heavy line. The needlepoint tip also gives the refill a precise feel on the page.

Because it uses gel ink, the PG-M05NP will generally feel smoother and wetter than oil-based ballpoint refills. It is best for users who prefer fine gel writing, smooth ink flow, and a refill that feels more refined than a basic ballpoint.

Compatible Pens

The Ohto PG-M05NP Gel Refill is the listed replacement refill for the Ohto GS02. It may also work in other pens designed around a compatible Parker-style or G2-style refill cavity, but fit should be checked carefully.

Common compatible pens and pen families may include:

Ohto GS02 Roller Gel
Select Ohto gel pens using the PG-M05NP
Some pens designed around Parker-style gel refills
Some machined pens designed for Parker-style refills
Other compatible 98 mm refill pens, when the shape and tip fit match

Do not assume every Parker-style pen will accept this refill perfectly. Small differences in shoulder shape, tip extension, spring position, or internal clearance can affect fit.

Compatible Brands

The Ohto PG-M05NP Gel Refill is primarily an Ohto refill, but it may also be relevant to pens from brands that use compatible Parker-style or G2-style refill formats.

Brands and pen categories to compare include:

Ohto
Retro 51
Parker-style compatible machined pens
Select EDC pens
Select twist ballpoint pens
Select retractable pens that accept Parker-style refills

Compatibility depends on the pen, not just the brand. A pen must have the right internal length, tip opening, spring setup, and refill clearance for the PG-M05NP to work properly.

Alternative Refills

The Ohto PG-M05NP Gel Refill is a specialized ceramic roller gel refill, but several related refills may be worth comparing depending on the pen and the writing feel you want.

Popular alternatives and comparison refills include:

The Ohto G-95NPS is another Ohto gel refill, but it uses a slimmer body and should not be treated as the same refill. The Ohto PG-105NP / PG-107NP refill family is also close in length, but it is a different related refill family and should be checked carefully before substitution.

Before choosing a substitute, use the Pen Refill Size Guide to compare refill length, diameter, shape, and tip style.

Refill Family

The Ohto PG-M05NP Gel Refill belongs to Ohto’s Ceramic Roller Gel refill family. It is a metal-bodied refill with a 0.5 mm ceramic needlepoint tip and black gel ink.

This refill is closely associated with the Ohto GS02. It is also related to the plastic-bodied PG-105NP / PG-107NP family, but the PG-M05NP is the metal-body ceramic roller gel option.

Within Ohto’s refill lineup, the PG-M05NP is separate from the 70 mm Ohto 705NP, the 89 mm Ohto 895NP / 897NP, the D1-style Ohto R-4C5NP / R-4C7NP, and the longer 175NP / 177NP refills. Ohto uses several similar-looking model numbers, so the exact refill model matters.

How to Identify an Ohto PG-M05NP Gel Refill

The Ohto PG-M05NP Gel Refill is a metal-bodied ceramic roller gel refill measuring 98 mm long. It has a 0.5 mm needlepoint tip and a wider body than slim Ohto stick refills such as the G-95NPS.

Key identification points:

98 mm long
5.8 mm diameter
Metal refill body
Nickel silver barrel
POM endplug
0.5 mm needlepoint tip
Ceramic writing ball
Black gel ink
Used in the Ohto GS02
Not a D1 mini refill
Not the same as the Ohto G-95NPS
Not the same as the Ohto 895NP / 897NP ballpoint refill

Do not confuse this refill with the Ohto G-95NPS Gel Refill, which is a slimmer gel refill. Also do not confuse it with the Ohto PG-105NP / PG-107NP Ballpoint Refill, which belongs to a related but different refill listing.

Not sure if this is your refill? Check the Pen Refill Finder to compare refill size, shape, and compatibility before ordering.

Frequently Asked Questions

Is the Ohto PG-M05NP Gel Refill the same as a Parker-style refill?

The Ohto PG-M05NP Gel Refill is close to the Parker-style refill category in length and general use, but compatibility still depends on the pen. It is safest to compare the original refill’s shape, shoulder, tip extension, and spring position before ordering.

What pen uses the Ohto PG-M05NP Gel Refill?

The Ohto PG-M05NP Gel Refill is the listed replacement refill for the Ohto GS02 Roller Gel pen.

What size is the Ohto PG-M05NP Gel Refill?

The Ohto PG-M05NP Gel Refill measures 98 mm long and 5.8 mm wide. It uses a 0.5 mm needlepoint ceramic writing tip.

Is the Ohto PG-M05NP Gel Refill a ballpoint refill?

No. The Ohto PG-M05NP Gel Refill is a gel refill. It uses ceramic roller gel technology, not standard oil-based ballpoint ink.

What is the difference between the Ohto PG-M05NP and Ohto G-95NPS?

The Ohto PG-M05NP is a wider metal-bodied ceramic roller gel refill used in pens such as the Ohto GS02. The Ohto G-95NPS is a slimmer gel refill with a different body shape and compatibility profile.

What is the best alternative to the Ohto PG-M05NP Gel Refill?

The best replacement is another Ohto PG-M05NP Gel Refill if your pen was designed for it. For pens that accept broader Parker-style refills, other Parker-style gel refills may be options, but fit should be checked carefully.

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