The 5104 uses high-elasticity materials to perform high-speed jerk and combination jerk using heavy weight jigs up to 500g in situations where double and triple tides occur in rapid tide deep areas. However, it is premised that the jig is operated using the restoring force, not the rod that does not bend. With a rod that is only hard, the jig moves too strongly, frightening the fish that have shown an interest in the jig. The 5104 makes it easy to grasp the timing to move the jig even when the water depth is deep, and you can operate a jig around 500g with light input with the same feeling as in shallow water.