The proposed Calligraphy Pens have a replaceable nib unit with long shaft pen barrel designs. These fountain pen sets are easy to hold and operate due to their ideal diameter. The pens come with four black ink cartridges, and the barrels are constructed of high-quality plastic, while the bodies are made of graded metal for smooth writing. Calligraphy Pens sets for lettering and calligraphy in four sizes (extra-fine, fine, medium, and brush). They are ideal for decorating the surface of any product and perfect for printable invites, wall art, calendars and planners, blog designs, textile dcor, invitations, scrapbooking projects, and much more.