A calligraphy brush is a specialized writing tool used for creating beautiful, artistic lettering. Typically made from soft bristles, these brushes allow for fluid strokes and varying line thickness, which are essential for traditional styles of calligraphy. They can be crafted from materials like animal hair or synthetic fibers, each offering different qualities in terms of flexibility and ink retention. Calligraphy brushes are often used in various cultures, including Chinese and Japanese calligraphy, where they play a crucial role in the art form. The technique involves holding the brush at an angle and applying varying pressure to achieve different effects, making it a favored tool for both beginners and experienced artists.