A heavy weight model has appeared in the "Dartlan" that was born to switch on the bottom-conscious fish. By increasing the weight by 0.6g compared to the original model, we realized speed fall and fast tempo action, and enhanced the reaction effect. In addition, since the installation area when the bottom is landed is large, sand dust can easily stand up and appeal to distant fish. In the middle layer dirt, it can also be used for various fish species such as cherry salmon, koho, yamame trout, and char.