Tail parts attached to the flat body has ridge tail shaped nail that makes full torque in falling, and the bulky upper arms paddle generates several vibration, they work also as a brake to change the posture as soon as it knocks the bottom. The usage is free rig and texas rig (stopperless) that maximizes the effect of "zero tension dirt". The versatility of the jig trailer and water surface retrieval on the no-sinker rig rig allows it to be used by anglers.