will they smudge if used on Architects tracing paper which is very similar to modern day greaseproof paper (not the old tissue style paper)

Just tried it on a piece of grease proof paper and the pen doesn't smudge. I put some lines on the paper and smudged it with my finger and it was alright so should be fine for you.

What size are these? Are these like the mini version or the normal size pen?

These are normal sized pens but with a fine nib, like the mini ones! Hope that makes sense?

Do they come with the box shown

yes but note that the box is not a hard plastic box but cardboard so not sure of its durability. May need to buy a replacement storage case in the long term.

Hi, I have the pack of 42. Does anybody know what the extra 8 colours are in the tin of 50? Thanks :)

Hi :) Here are the numbers of the colours listed on the back of the tin of 50: 10, 1, 110, 43, 2x 430, 4, 24, 2, 48, 29, 222, 20, 23, 61, 21, 62, 6, 260, 69, 36, 63, 30, 37, 3, 34, 54, 550, 53, 5, 52, 51, 38, 55, 57, 16, 7, 73, 76, 77, 82, 8, 2x 9, 101, 401, 201, 221, 501 301. So they give you two of 430 and two of 9, hope this helps!

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STAEDTLER triplus fineliner 334 – 10 Colours, 0.3 mm, Triangular

Product ID: 47959760

Details

Age range (description)
Adult
Brand
STAEDTLER
Colour
Assorted
Ink colour
Assorted
Material
Recycled (rPP)
Model name
triplus

⏳Dry safe ink lasts days uncapped

♻️97% recycled plastic body

✏️0.3mm ultra-fine tip

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Description

✍️ Write sharp, stay green, and never miss a beat!

ECO CHIC DESIGN - Crafted from 97% recycled polypropylene, combining sustainability with style.
UNINTERRUPTED CREATIVITY - Dry safe ink technology lets you leave pens uncapped for days without drying out.
VIBRANT ASSORTED PALETTE - Pack of 10 vivid colors to elevate your notes, sketches, and creative projects.
ERGONOMIC TRIANGULAR GRIP - Designed for relaxed, fatigue-free writing—perfect for long brainstorming sessions or adult coloring.
PRECISION IN EVERY STROKE - Experience flawless 0.3mm metal-clad tips for crisp, detailed writing and coloring.

The STAEDTLER triplus fineliner pack offers 10 assorted vibrant colors with ultra-fine 0.3mm metal-clad tips for precise writing and coloring. Featuring an ergonomic triangular shape for comfortable grip and made from 97% recycled plastic, these pens boast dry safe ink that remains fresh even when left uncapped for days—ideal for professionals and creatives seeking sustainable, reliable, and stylish stationery.

Specifications

ASIN	B0007OEDYI
Age Range Description	Adult
Best Sellers Rank	519 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 5 in Fineliners
Body Shape	Triangular
Brand Name	STAEDTLER
Colour	Assorted Colours
Country Of Origin	Germany
Customer Reviews	4.7 4.7 out of 5 stars (7,052)
Drill Point	Fine
Global Trade Identification Number	04007817334010
Grip Type	ergonomic triangular shape
Included Components	10 fineliners
Ink Base	Water
Ink Colour	Assorted Colours
Is the Product Left or Right Handed?	Ambidextrous
Item Diameter	0.3 Millimetres
Item Dimensions	17 x 10.9 x 1.7 centimetres
Item Weight	0.01 Kilograms
Line Size	0.3mm
Manufacturer	Staedtler
Material Type	Recycled Polypropylene (rPP)
Model Name	triplus fineliner
Model Number	334 SB10 ST
Pattern	Assorted
Product Warranty	No
Recommended Uses For Product	Colouring, Note Taking, Writing
Special Features	Refillable
Style	Desktop Box
Theme	Writing
UPC	799198568729 031901951917
Unit Count	1.0 count
Water Resistance Level	Not Water Resistant
Writing Instrument Form	Marker Pen
Writing Technique	felt tip

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$26.68

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered 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 British Virgin Islands.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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