Red Rayskin Wrapped Saya 赤鮫皮 Option:Genuine Rayskin fully polished inside the groove

fully polished inside the groove

smelted from satetsu (砂鉄) and repeatedly folded (orikaeshi-tanren / 折り返し鍛錬)

Samegawa (Ray Skin 柄鮫): Natural unbleached ray skin（本鮫皮）under the wrap

Handcrafted Raden Fuemaki Lacquered Saya with Natural Horn Fittings｜Koshirae-Grade Finish

Shinken (真剣) | Vajra Katana: TangGu (湯谷) Maru Blade (丸造) + TangGu (湯谷) Kongo Koshirae (金剛拵)

Red Rayskin Wrapped Saya 赤鮫皮 Option:Genuine Rayskin fully polished inside the grooveHandcrafted Red Rayskin Wrapped Saya with Natural Horn FittingsKoshirae Grade Finish This handcrafted saya is a Red RayskinWrapped Saya (), featuring a rich red finish that adds distinctive texture and visual depth, providing a refined yet powerful alternative to conventional lacquer only saya. The red tone conveys vibrancy, strength, and elegance, while preserving the understated aesthetics of traditional craftsmanship. The koiguchi (mouth), kurigata