Naginatas can be used to batter, stab or hook an opponent, but due to their relatively balanced center of mass, are often spun and turned to proscribe a large radius of reach. The curved blade makes for an effective tool for cutting due to the increased length of cutting surface.
Naginatas were often used by foot soldiers to create space on the battlefield. They have several situational advantages over a sword. Their reach was longer, allowing the wielder to keep out of reach of his opponent. The long shaft offered it more leverage in comparison to the hilt of the katana, enabling the naginata to cut more efficiently. The weight of the weapon gave power to strikes and cuts, even though the weight of the weapon is usually thought of as a disadvantage. The weight at the end of the shaft and the shaft itself can be used both offensively and defensively.
-- From Wikipedia
This Fire and Steel naginata is 177cm long. 1045 carbon steel. Comes with a wooden sheath.