What is Ni no Ashi in Japanese Katana terminology?

The term "Ni no Ashi" (二の足, にのあし) refers to one of the two fittings, known as "Ashikanamono" (足金物), that are installed on a Japanese sword for the purpose of passing through the "Obitori" (帯執), which is used to hang (Haku: wear on the waist) the sword. Specifically, the "Ni no Ashi" is the fitting that is further from the "Sayaguchi" (鞘口: scabbard mouth). This terminology is used to describe the specific characteristics of the sword's structure, contributing to its overall aesthetic and functional design.