will they fit Preston dual ballpoint stylus(promotional pens)

Good question. I do not know since I bought the refills for a different brand of pen and do not have a Preston type pen....

Will these fit the true utility 6 in 1 muti tool pen?

Yes they do fit the true 6 in 1 pen. They are slightly short but they do work.

Does the black piece on the end come off? I have a really nice pen (gift) that uses a refill like this but does not have a piece on the end.

Yes, it does come off. The refill is 2 5/8 inches long after taking it off.

Does this refill fit a Helios pen?

No. the refills for Helios pen is bigger than this item.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Tangula Cable 79

Product ID: 758822517

Details

Brand
AIYIBEN
Colour
Black Refills
Ink colour
Black
Item dimensions L x W x H
7 x 0.2 x 0.2
Item weight
1 Grams
Point type
Broad

🔋10-pack long-lasting refills

⚙️durable metal tip

🖊️0.7mm precision core

Description

🖋️ Upgrade your pen game—because your ideas deserve the smoothest flow!

BUILT TO LAST - Metal tip ensures durability for extended, reliable use
READY FOR ACTION - Includes 10 high-quality black ink refills to keep you writing without interruption
COMPACT CONVENIENT - 2.75-inch length refills fit perfectly in your favorite pens for on-the-go productivity
EFFORTLESS PRECISION - 0.7mm core delivers smooth, consistent lines without skips or smudges
UNIVERSAL COMPATIBILITY - Designed to fit Multi Tool Pens and diamond crystal stylus pens seamlessly

The Tangula Cable 79 offers 10 durable metal-tip ballpoint pen refills with smooth black ink and a precise 0.7mm core, designed for seamless compatibility with Multi Tool and diamond crystal stylus pens, ensuring uninterrupted, professional-grade writing performance.

Specifications

ASIN	B07GZJ9TYW
Brand Name	AIYIBEN
Colour	Black Refills,10 pack
Customer Reviews	4.6 4.6 out of 5 stars (1,326)
Drill Point	Broad
Ink Colour	Black
Item Dimensions	7 x 0.2 x 0.2 centimetres
Item Weight	1 Grams
Manufacturer	AIYIBEN
Model Number	43396-132497
Style	Ballpoint
Unit Count	10.0 count

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