Can you refill it or is it disposable?

You can refill this, with either a Pilot converter or with a Pilot cartridge. Pilot uses proprietary converters and cartridges.

Can the Con-40 converter be used in this pen?

The Con-B, Con-40 and the Con-70 can all be used in the Pilot Kakuno.

Is the ink waterproof and archival?

Pilot Namiki ink, which is what comes in the cartridge with the pen, is not waterproof or archival. For replacing the ink in the cartridge with permanent, archival-quality, and water resistant ink, I recommend buying Diamine Registrar's Blue-Black Ink, a 3ml luer-lock syringe, and a blunt-tipped dispensing needle at least 3 inches long. 1. Gently insert the cartridge (JUST BARELY) into the pen, only enough to open the cartridge. Pull it back out, rinse the ink out of the pen, and empty the ink from the cartridge with the syringe and needle. Dispose of the ink, and rinse the cartridge, syringe, and needle with clean water. Shake the water out of the cartridge. You can dry it out with a Q-tip if you don't want you new ink diluted at all. 2. Withdraw ALMOST 1ml of the Registrar's Blue-Black Ink with the syringe, and fill the cartridge with it. 3. Insert the newly refilled cartridge into the pen, gently but firmly. Set the pen nib-down in a cup , with the cap on, for 5-10 minutes, so the ink can saturate the feed and reach the nib. And don't press too hard if it's still not writing yet. Give it some more time.

What size cartridge does this pen take?

The PILOT KAKUNO FP takes a PILOT NAMIKI IC100 FOUNTAIN PEN INK CARTRIDGE or a PILOT CON 40 converter.

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PILOT Kakuno Fountain Pen, Clear Barrel, Extra Fine Nib 0.3mm | Writing for taking notes, beginner fountain pen, hexagonal barrel, easy hold, writing pens

Product ID: 103052070

Details

Age Range (Description)
Above 8 years
Brand
PILOT
Color
Clear Barrel
Ink Color
Black
Writing Instrument Form
Fountain Pen

✋Ergonomic Hexagonal Grip

🔍Clear Barrel for Ink Visibility

🖋️0.3mm Extra Fine Nib

¥3925

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Description

🖋️ Write Sharp, Write Smart — Join the Kakuno Club!

TRANSPARENT ELEGANCE - Clear barrel design lets you watch your ink flow, blending style with function.
COMFORT MEETS CONTROL - Hexagonal, dotted grip ensures fatigue-free writing for long creative sessions.
TRUSTED LEGACY IN YOUR HAND - Crafted by Pilot, a century-old brand synonymous with quality and reliability.
PRECISION WRITING EVERY TIME - Experience ultra-smooth, extra fine 0.3mm nib for flawless notes and signatures.
SMILEY NIB FOR PERFECT POSTURE - Unique smiley face on nib guides your hand to the ideal writing angle—no guesswork needed.

The PILOT Kakuno Fountain Pen features an extra fine 0.3mm nib with a playful smiley face to guide perfect writing posture. Its clear barrel offers a modern, transparent look while allowing ink level visibility. Designed with a hexagonal, dotted grip for ergonomic comfort, this pen is ideal for professionals, creatives, and journaling enthusiasts seeking precision and style backed by Pilot’s 100+ years of trusted craftsmanship.

Specifications

Additional Features	Capped
Age Range Description	Above 8 years
Asin	B07KBN9YTK
Best Sellers Rank	#2,457 in Office Products (See Top 100 in Office Products) #3 in Fountain Pens
Body Shape	Hexagonal
Brand Name	PILOT
Closure Type	Retractable
Color	Clear Barrel
Customer Reviews	4.6 4.6 out of 5 stars (4,480) 4.6 out of 5 stars
Drill Point	Extra Fine
Global Trade Identification Number	00072838108166
Grip Type	Dotted
Hand Orientation	Ambidextrous
Hardness	1
Included Components	Pilot Kakuno Fountain Pen, Extra Fine Nib, Clear Barrel, Clear Cap, Black Ink, Single Pen (10816)
Ink Base	Water
Ink Color	Black
Item Dimensions	2.7 x 8.1 x 6.2 inches
Item Type Name	Kakuno Fountain Pen, Extra Fine Nib, Clear Barrel, Clear Cap, Black Ink, Single Pen (10816)
Item Weight	9.07 g
Line Size	0_3mm millimeters
Manufacturer	Pilot Pen Corporation of America
Material Type	Plastic
Model Name	Pilot
Model Number	Kakuno 10816
Recommended Uses For Product	Writing
Style	Extra Fine Nib
Subject Character	Smiley Face
Theme	Writing
Unit Count	1 Count
Upc	072838108166
Warranty Description	see packaging
Writing Instrument Form	Fountain Pen
Writing Technique	Fountain Pen

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¥3925

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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