The Bonji Koshirae features sanskrit letters on metal fittings, such as the silver-plated brass fuchi and kashira, iron-made tsuba and silver-plated menuki. Each sanskrit character represents a guardian deity like Acala, Samantabhadra or Amitabha. The saya lacquer is available in kuroro, kuroishime and chaishime. A sand-casted, a bubble-free zinc/aluminum alloy blade is available up to 2.70 shaku. The tsuka is carefully hand-wrapped with cotton braids over white tsukasame and the sageo matches the tsuka color. For those who prefer a kojiri attachment, this koshirae has one that matches the theme available as an option.