Is it water based ink?

Sorry, I have no idea. I do not believe that it is however.

I have a pentech. Will this work? I don’t know the model but the ink cartridge is identical to the one posted.

I can't tell you if it will work, there are many subtle differences in Montblanc cartridges and I myself bought the wrong one before. If all the specs listed on the side of the cartridge are the same as your incumbent cartridge then you should be fine.

Hi, what is the size ? i need 4.5" for my pen...

The last ones I received were 4.5".......

Which years product I will have if I buy now ?

Suggest you find different source for this product. I have had a bad experience. First shipment, ink was dry; second shipment was medium point vs fine, which I wanted.

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Montblanc Rollerball LeGrand Refills (M) Mystery Black 105164 – Refill Cartridge Exclusively for The Meisterstück LeGrand Rollerball Pen – 2 x Black Pen Refills

Product ID: 48399858

Details

Brand
MONTBLANC
Item dimensions L x W x H
11.5 x 0.8 x
Item weight
0.01 Kilograms
Number of pieces
2
Style
medium / 1

⚡Quick-drying ink prevents smudges

🖤Mystery Black ink with intense, elegant color

🖋️Medium rolling ball nib for smooth precision

¥19050

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖋️ Elevate your signature game with Montblanc’s flawless black ink.

DOUBLE THE POWER - Set of two refills means you’re always prepared to make your mark, keeping your pen ready for every important moment.
EFFORTLESS ELEGANCE - Designed exclusively for the iconic Meisterstück LeGrand Rollerball pen, ensuring a perfect fit and premium writing experience.
SMUDGE FREE MASTERY - Quick-drying ink technology guarantees flawless documents and signatures without the worry of smears.
GIFT READY SOPHISTICATION - Comes in a sleek, presentative box that mirrors the ink’s deep black hue—ideal for gifting or personal indulgence.
PRECISION IN EVERY STROKE - Medium tip rollerball nib glides smoothly on high-quality stationery without scraping, elevating your professional image.

Montblanc Rollerball LeGrand Refills in Mystery Black are precision-engineered ink cartridges designed exclusively for the Meisterstück LeGrand Rollerball Pen. Featuring a medium rolling ball nib, quick-drying intense black ink, and a smudge-resistant formula, these refills deliver a smooth, elegant writing experience on premium stationery. Packaged in a stylish gift box, the set includes two refills to keep your pen performing at its best.

Specifications

ASIN	B007FBAZEI
Best Sellers Rank	133,010 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 1,274 in Pen Refills
Brand Name	MONTBLANC
Customer Reviews	4.4 4.4 out of 5 stars (1,293)
Global Trade Identification Number	00046737774708, 04017941591234
Included Components	Ink Cartridge
Ink Colour	Mystery Black
Item Dimensions	11.5 x 0.8 x 0.8 centimetres
Item Type Name	Montblanc rollerball refills Mystery Black 105164 - Replacement lead for Montblanc Meisterstück LeGrand - size M - 2 x Montblanc refill rollerball pen M
Item Weight	0.01 Kilograms
Manufacturer	Montblanc
Manufacturer Part Number	105164
Model Number	105164
Number of Pieces	2
Package Size Name	Set of 2
Point Type	Medium
Style	medium / 1
Unit Count	2 Refill

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