Having the tungsten metal weight on the outside lip allows for more room for the lure to make a rattling vibration. TN 70 is designed to have the best balance so the lure can swim at the slowest possible retrieval speeds for especially tough conditions. It also has been designed to have long distance casting ability so you can cover more water and catch more fish! Jackalls specially designed weighted system makes it possible for the lure to stand straight up at the bottom. This will create less snagging than traditional types of lipless crankbaits.