The term "tsuka" refers to the handle of a traditional Japanese sword, particularly the katana. It is an essential part of the sword's design, providing grip and control for the user. The tsuka is typically wrapped in a material called tsuka-ito, which can be made from cotton, silk, or leather, enhancing both comfort and functionality. In addition to its practical use, the tsuka often features decorative elements, such as menuki, which are small ornaments placed under the tsuka-ito. These embellishments not only add aesthetic value but also serve to improve grip. The craftsmanship of the tsuka is crucial for the overall balance and effectiveness of the sword.