This mini-size Pro Gear Slim fountain pen features a cute and compact design that is easy to tuck into a pocket or purse. With the cap posted securely onto the back of the pen, however, it transforms into a comfortably full-sized pen for long sessions of writing or note-taking. This pen's medium fine nib is ideal for everyday writing and drawing. It is the perfect choice for anyone wanting something slightly finer than a medium nib but not quite as fine as a fine nib. •14k gold nib. •High-quality resin construction. •Gold-plated accents. •Will add 3 sailor cartridges for you Please Note: This pen has been inked 1 time and tuned by Matthew Chen! Writes perfectly. Downsizing Collection. This pen’s cap posts by sliding onto the end of the barrel. Some Pro Gear Slim Mini pens’ caps post by screwing onto the end of the barrel. Due to its small size, this pen is not compatible with standard-size Sailor fountain pen converters. A compatible mini converter can be found under Recommended Refills/Parts. Sailor's gold fountain pen nibs are known for their characteristic feedback. As you write, it is normal to feel the vibrations of the nib as it traverses the microscopic nooks and crannies of the paper.