This one apparently takes the needlepoint tip refills, is it close, though?
https://www.amazon.com/Muji-Aluminium-Hexagonal-Pen-0-7mm/dp/B00YPD18NG/ref=asc\_df\_B00YPD18NG/?tag=hyprod-20&linkCode=df0&hvadid=241997487319&hvpos=&hvnetw=g&hvrand=656706494741504668&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9058312&hvtargid=pla-476485859170&psc=1