Pen CarouselIntroducing the Pen Carousel! Proudly display your collection of pens where they can be seen and not forgotten in a case. Each Pen Carousel holds 25 fountain pens in their own slot that is lined with felt around the sides and on the bottom so there are no hard contacts between your pens and hard plastic. With an enlarged 17. 5mm diameter, nearly all pens should fit without a problem. Including the maker pens which typically run larger. As with the