Made of ultra-high specific gravity tungsten for improved sensitivity, flight distance, and snagging avoidance performance. Sensitivity and flying distance improve by air resistance, reduction of current resistance. Obstacle avoidance performance is improved, and bottoming is easy even in deep areas. Shape is round head. Whether you are aiming for swimming or aiming for the bottom, the usability is the best. Stable falling that can be dropped straight along the structure. Because it is good at slipping through obstacles, rooting, which can be said to be difficult to avoid in this light rock fish game, has been extremely reduced.