MengRan 2.75'' Ballpoint Pen refills for Swarovski Pen and other Brand Diamond Crystal Stylus Pens (10 pcs Black ink) : Amazon.ca: Office Products
YOUMI 2.75” Replacement Ballpoint Pen Refill for Big Diamond Pen Refill for Crystal Capacitive Touch Screen Stylus, 15 Black Ink and 5 Bule Ink (Pack of 20) : Buy Online at Best
How to replace refill on a swarovski pen. - YouTube