This ultimate Itoya Pen refill guide shows you every refill Itoya makes for their pens, which pens they fit, and alternatives from other brands where available.
Table of Contents
1. About Itoya
Itoya is not primarily known as a Japanese maker of writing instruments. Instead, Itoya is renowned for its high-quality stationery products, particularly luxury paper goods, and notebooks.
Founded in 1904 in Tokyo, Japan, Itoya has a long history of providing exceptional stationery to consumers.
The company’s flagship store, called “Itoya Ginza,” is located in the upscale Ginza district of Tokyo. This store is a stationery paradise spread across several buildings, offering a unique range of stationery products, including notebooks, writing paper, pens, pencils, and other creative materials.
The store attracts stationery enthusiasts and artists worldwide due to its vast selection of premium products.
Itoya Ginza is not just a retail store; it’s an experience. The brand focuses on blending traditional Japanese craftsmanship with modern design and functionality.
This approach has earned them a loyal customer base and a reputation for excellence in the stationery industry.
While Itoya may offer writing instruments as part of its product lineup, it is renowned for its paper-based products and the overall stationery shopping experience it provides.
Itoya Aqua Roller Pen Refills – AQR-7/10
2. Itoya Aqua Roller Pen Refills – AQR 7/10
The Itoya Aqua Roller refill is a smooth-writing, parker style refill containing quick-drying acid-free gel ink.
Parker-style refills are standard, so Aqua Roller refills can be fitted in any pen using this type of refill. Conversely, any Parker Style refill will fit if you want to try a different refill.
Check out our Parker Style Refills Guide for more information.
Aqua Roller Pen Refills are available in the following colors and sizes:
AQR-7 – Refill with a 0.7mm tip and black ink
AQR-10 – Refill with a 1.0mm tip and black ink
Aqua Roller pen refills fit the following pens:
- Aqua Roller DC100 Pen
- Aqua Roller MD100 Pen
- Aqua Roller SS810 Pen
- Aqua Roller XE100 Pen
They will also fit Itoya gel pens as they use the same standard-size refill (Parker Style G2)
3. Itoya Ballpoint Pen Refills – K-420RBK
Itoya no longer supplies K-420 ballpoint pen refills in the U.S. or Europe. They may be available in Japan or discontinued altogether.
These refills are a propriety size and no alternative refills that will fit.
Itoya ballpoint pen refills were available as the following:
- K420RBK Ballpoint Pen Refill Fine Point – Black Ink.
- K420RM Ballpoint Pen Refill Medium Point – Black Ink.
Itoya ballpoint pen refills fit the following pens:
- Itoya A500 Ballpoint Pen
- Itoya K400 Ballpoint Pen
- Itoya K420 Ballpoint Pen
- Itoya K500 Ballpoint Pen
- Itoya K700 Ballpoint Pen
- Itoya PS102 Ballpoint Pen
- Itoya SH500 Ballpoint Pen
- Itoya SH910 Ballpoint Pen
4. Itoya Gel Pen Refills – GPR-7
The Itoya GPR-7 gel pen refills are a standard Parker G2 type refill with a 0.7mm needlepoint tip. They contain a long-lasting, smooth writing acid-free gel ink available in the following colors:
Itoya gel pen refills fit the following pens:
- Itoya CG830 Gel Pens
- Itoya SK100 Gel Pens
- Itoya SS870 Gel Pens
- Itoya XE200 Gel Pens
- Itoya XR100 Gel Pens
They will also fit Itoya Aqua roller pens as they use the same standard-size refill (Parker Style G2)
5. Itoya Rollerball Pen Refills – NPR-5 & NPR-7
The Itoya NPR rollerball pen refills are standard Euro Format refills with a ceramic rolling ball. The refill has a plastic barrel and black ink with either a 0.5mm or 0.7mm tip.
Itoya Roller Pen Refills are available in the following colors and sizes:
- NPR-5 – Refill with a 0.5mm tip and black ink
- NPR-7 – Refill with a 0.7mm tip and black ink
Itoya rollerball pen refills fit the following pens:
- Itoya NP-10 PaperSkater Rollerball Pen
- Itoya NP-12 PaperSkater Rollerball Pen
- Itoya G200 Galaxy Rollerball Pen
6. Where Can I Buy Cheap Itoya Pen Refills
If you want to save money and buy cheap Itoya refills, Amazon is probably as good as anywhere. Many other online stores will sell them, but they struggle to compete with Amazon on prices and postal costs.
If you have a pen from a different manufacturer, check out Pen Brands Refill Guides, where there is a complete list of our in-depth refill guides for each manufacturer.
For more information about the different types of pen refills, check out our Ultimate Pen Refill Guide.