八卦弧形钩镰剑，在八卦门很少见，属稀有兵器，弧形钩镰剑是雌雄，属一对，它俩合并的时候就像一个阴阳圆。八卦连环刀以形意八卦为基础，常练此刀法对身形的轻捷、灵活和下肢的力量都能有很大提高。

The eight elements arc hook sickle sword is a rare weapon in Eight elements. This weapon is form of two weapons that means male and female. When they merge it is like a circle of negative and positive. Eight elements interlink knife is base on the Shape and impression eight element, practice this a lot can improve the nimble of the body, the strength of lower limbs.