Does this fit Pierre Cardin 666?

Not sure. They seem to fit a wide range of my pens so maybe.

Does this fit Cross 8523?

Sorry to get back to you so late but looking at the 8523 the refill appears to be quite long around 3-3.5 “ the refill that I purchased was around 2” max

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4.37'' Rollerball Pen Refills, Roller Ball Fine Point 0.5mm, German Ink Refill Pack of Replaceable Pen Refills Medium Point(6 Pack) (Blue)

Product ID: 300827546

Details

Brand
AIYIBEN
Item dimensions L x W x H
11.1 x 0.6 x
Item weight
34 Grams
Number of pieces
6
Style
Gel

📏4.37'' precision length

🔵Smooth blue German gel ink

🖊️0.5mm fine rollerball tip

S/.94

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Description

🖋️ Elevate your pen game—never run dry on style or substance!

VALUE PACK - 6 refills to keep you writing and sharing without pause
LONG LASTING FLOW - Consistent ink flow with quick-drying, no-ooze formula
SLEEK METAL BUILD - Durable, lightweight metal casing for a premium feel
PRECISION PERFECTED - 0.5mm fine point for crisp, professional writing
UNIVERSAL COMPATIBILITY - Fits Parker & Waterman rollerball pens—extend your favorite pen’s life

This 6-pack of 4.37-inch metal rollerball pen refills features a precise 0.5mm fine point with smooth, quick-drying German blue gel ink. Compatible with Parker and Waterman rollerball pens, these refills offer consistent ink flow without oozing, extending the life of your favorite premium pens. Ideal for professionals seeking reliable, sleek writing performance in office, business, or school settings.

Specifications

ASIN	B08DRSB1ST
Best Sellers Rank	22,078 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 183 in Pen Refills
Brand Name	AIYIBEN
Country Of Origin	China
Customer Reviews	3.9 3.9 out of 5 stars (1,085)
Ink Colour	Blue
Item Dimensions	11.1 x 0.6 x 0.6 centimetres
Item Weight	34 Grams
Manufacturer	AIYIBEN
Manufacturer Part Number	Ink Pen Refills 437
Model Number	Ink Pen Refills 437
Number of Pieces	6
Point Type	Medium
Style	Gel
Unit Count	1.0 count

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S/.94

Duties & taxes included

In stock

Sold byAmazon PeruDelivered 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 Peru.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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