Pens That Broke

I look at 5 pens that broke. I try to determine why? PENBBS 456-16SF    • PENBBS 456 16SF Vac-Fill Fountain Pen - re...   Wing Sug 627 -    • Wing Sung 627 Fountain Pen Review   Wing Sung 659 -    • Wing Sung 659 Fountain Pen - Almost a WOW ...