Iron halberds each with an iron-sword type tip shape, which were also unearthed in the southern part of the Korean peninsular as well as in the northern Kyushu area, constituted main arms at that time.
鉄剣形の槍先にした鉄矛は、朝鮮半島南部や北九州でも出土していて、当時の武器の中心になっていた。