A metal jig Collider for bass fishing. A lightweight zinc-based special alloy with a specific density of 7.2 is used as the material (lead is approximately 11.3). It is much lighter than lead and is effective when you let it fall slowly. Due to its slender shape and this special alloy, the jig is sent to the point with a quick fall, reacts swiftly to shakuri, and is finished as a jig that turns sideways and enables slow fall. Among the metal jigs for bass fishing of the same weight class, it is the jig of the slowest fall class.