Tōsōgu 刀装具 refers to the artistic, decorative, and functional metal fittings used on traditional Japanese swords.
Key components of Tōsōgu include:
Tsuba 鍔: The hand guard situated between the blade and the handle. It protected the hands and balanced the weapon.
Fuchi-Kashira 縁頭: The collar and pommel that secure the hilt (tsuka).
Menuki 目貫: Ornamental metal pieces placed under the handle wrap to improve grip and add aesthetic flair.
Kozuka 小柄 & Kōgai 笄: A small utility knife and a decorative hairpin stored in the scabbard. Artisans used materials like iron, copper, bronze, and specialized alloys like shakudo (copper and gold) and shibuichi (copper and silver).