Brand profile

TWSBI Diamond 580

A popular demonstrator piston-filler fountain pen produced by the Taiwanese company TWSBI, known for its large ink capacity.

2 questions · 1 categories · As of Nov 12, 2026

Best category rank
#104
Pens & Writing Instruments · of 222
Questions
2
1 categories
Answers naming it
2/12
Of the answers measured on this brand's questions

Visibility by category

CategoriesCategory rankQuestionsScore
Pens & Writing Instruments#104of 22229.4

Ranking by question

Named alongside in Pens & Writing Instruments

Brands named in the same answers as TWSBI Diamond 580 in the last four weeks, counted in answers.

  1. 13Lamy Safari
  2. 22Fisher Space Pen
  3. 32TWSBI ECO
  4. 42Caran d’Ache 849
  5. 52Lamy 2000
  6. 62Montblanc Meisterstück
  7. 72Pilot Vanishing Point
  8. 81BIC Round Stic
  9. 91Craft Design Technologies Tradio Fountain Pen
  10. 101Cross
  11. 111Cross Bailey
  12. 121Cross Century II
  13. 131Cross Classic Century Ballpoint
  14. 141Delfonics Wooden Ballpoint
  15. 151Graf von Faber-Castell Classic
  16. 161Kaweco Sport
  17. 171LAMY
  18. 181Lamy AL-Star
  19. 191Lamy Studio
  20. 201Leuchtturm1917

Sources cited when this brand is named

Sites the answers naming this brand cited in the last four weeks. Counts are citing answers.

Sources cited when this brand is named
RankSourceCiting answers
1gentlemanstationer.com2
2amazon.comshopping1
3cross.com1
4gearpatrol.com1
5goldspot.com1
6jetpens.com1
7shopping.google.comshopping1
8thepenguy.com1
9thirstybear.com1
10today.com1

Named by surface, by question

For the brand's best questions: of each surface's 1 answers, how many named it.

Named by surface, by question
QuestionsGoogle AI OverviewsChatGPTClaudeGeminiGoogle AI ModeMicrosoft Copilot
1Which pens and writing instruments make the best gifts?000010
2Which pens offer the best quality for the price?000001