A polyhedral worm that attracts old and large rockfish, supervised by the big rockfish master Rintaro Iwasaki. A polyhedral worm based on the know-how to capture large rockfish. The characteristic hexagonal body and ultra-thin sword tail create a sense of stability and straight-line performance, and produce stable action even in free winding and mid-level swimming. ``Sword Beam'' eliminates any spontaneous actions that would make rockfish wary. It attracts fish with minimal appeal that does not cause discomfort even to older big fish that dislike unnecessary vibrations.