OHTO PG-105NP Gel Ink Refill | G2 Compatible | 0.5mm Black | Made in Japan

OHTO PG-105NP Gel Ink Refill — Japanese Precision in Every Stroke

Keep your favorite pen writing like new with the OHTO PG-105NP gel ink roller refill. Engineered in Japan to the highest standards, this 0.5mm refill delivers a consistently smooth, clean line with fast-drying black gel ink — perfect for everyday writing, note-taking, and professional use. Compatible with G2-standard pen bodies, including the OHTO GS01-G5 and most popular retractable gel pens.

✦ Key Specifications

• Brand: OHTO Japan
• Model: PG-105NP
• Type: Gel Ink Roller Pen Refill
• Tip Size: 0.5mm
• Ink Color: Black
• Compatibility: G2-standard pen bodies (including OHTO GS01 series)
• Origin: Made in Japan

✦ Why Choose OHTO Refills?

OHTO has been crafting precision writing instruments since 1948. The PG-105NP uses the same high-quality gel ink formula found in OHTO's flagship pens — smooth flow, minimal skipping, and quick-drying ink that resists smearing. Once you write with it, you'll understand why stationery enthusiasts keep coming back to OHTO.

✦ Compatible With

• OHTO GS01-G5 Roller Gel Pen
• OHTO Flash Rocco series
• Most G2-standard retractable gel pens

❓ Frequently Asked Questions (FAQ)

Q: Is the OHTO PG-105NP compatible with Pilot G2 pens?

A: The PG-105NP follows the G2-standard refill format, making it compatible with most G2-style pen bodies. However, fit can vary slightly by brand — we recommend verifying the barrel length and tip diameter before purchasing for non-OHTO pens.

Q: What ink color does this refill use?

A: This refill contains black gel ink (黒 / Kuro). It produces a crisp, dark line ideal for writing, signing, and note-taking.

Q: How long does one refill last?

A: Ink life varies by usage, but under typical writing conditions (approx. 200m of line length), one PG-105NP refill provides extended, reliable performance comparable to other premium gel refills.

Q: Is the ink quick-drying? Will it smear?

A: Yes. OHTO's gel ink formula is designed to dry quickly on most paper types, significantly reducing smearing — a great choice for both left- and right-handed writers.

Q: Can I use this refill in the OHTO GS01-G5 pen?

A: Absolutely. The PG-105NP is the recommended OEM refill for the OHTO GS01 series, including the GS01-G5 Horizon metal barrel pen sold in our store.

Q: Where is this refill manufactured?

A: The OHTO PG-105NP is manufactured in Japan by OHTO Co., Ltd., ensuring consistent quality and performance with every refill.