Yari
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Yari is the term for a traditionally-made Japanese blade in the form of a spear, or more specifically, the straight-headed spear. The martial art of wielding the yari is called sōjutsu. Wikipedia
Length: 1–6 m (3 ft 3 in – 19 ft 8 in)
Mass: 1.27 kg (2.8 lb)
Place of origin: Japan
Scabbard/sheath: Lacquered wood