This is the Katana Fittings Kit Includes 1 Brass Seppa 2 Bamboo Mekugi For Japanese Sword. Seppa are important Japanese sword fittings. They serve to provide shock absorption from contact, to ensure a good fit between habaki, blade and tsuka and to separate the blade from the hand-guard. Our Seppa is made from brass, which is one of the traditional koshirae materials. Mekugi are important parts of the Japanese sword. They hold the handle in place and act as a locking mechanism. Traditionally, swords only needed one mekugi. Most modern swords, however, require two. Our Mekugi are made of bamboo and cured as they have been for years. This strengthens the bamboo and makes it less prone to failure. Additional Details ------------------------------ Product description: This is the Katana Fittings Kit Includes 1 Brass Seppa 2 Bamboo Mekugi For Japanese Sword. Seppa are important Japanese sword fittings. They serve to provide shock absorption from contact, to ensure a good fit between habaki, blade and tsuka and to separate the blade from the hand-guard. Our Seppa is made from brass, which is one of the traditional koshirae materials. Mekugi are important parts of the Japanese sword. They hold the handle in place and act as a locking mechanism. Traditionally, swords only needed one mekugi. Most modern swords, however, require two. Our Mekugi are made of bamboo and cured as they have been for years. This strengthens the bamboo and makes it less prone to failure.