Precise weight balance provides excellent initial response and excellent gliding performance. The two maneuvers of rod work and sinking gravity allow it to slide and fall from a tension-free state. By controlling the initial input to the slide and the interval between the auto-fall action, you can create the timing of the lure and bite you want. The ZERO1 Semi-Long is a self-propelled high-tech jig that combines the characteristics of a short jig and a long jig.