Fineline™ Ink Pens, one each of two different 1 in. tip sizes: 21 gauge and 22 gauge. The Fineline Ink Pen is designed for faster flowing liquids such as high flow acrylic inks, watercolor inks and more (not for use with fountain pen ink and other liquids of similar vicosity). Refilling is almost a thing of the past: one of the top features is the 1 oz reservoir in the easy to use tube bottles. Airtight and non-clogging, make long, continuous links and designs. With the large reservoir, the user is given an endless design/drawing experience without the nuisance of having to refill often.