Excellent initial response and superb gliding performance brought about by precise weight balance. It develops a self-propelled slide & fall action from a tension-free state using two types of mobility: rod work and sinking gravity. By controlling the interval between the initial input for sliding and the auto-fall action, you can create enticing and biting timings at will. The Zero One Semi-Long is a self-propelled, high-tech jig that combines the characteristics of both short and long jigs.

Jigs in the category called "long" require a large initial input when performing a slide action. These jigs, specialized for large horizontal movements, generate very strong appeal, but they require consistent, strong rod work, making it difficult to control the delicate slide width. Furthermore, their large travel distance means they quickly exit the feeding area, limiting opportunities for bites. The Zero One is designed to initiate movement with minimal force, making it easy to control slides with varying rod work intensity. By repeatedly performing slow slides and falls near the bottom, or by creating irregular slides with varied actions, you can control the pitch of enticing and biting actions according to conditions, greatly expanding your offensive range.

While the Zero One is effective against amberjack that prefer quick actions, and for migratory fish like yellowtail and tuna, and cutlassfish that inhabit the mid-layers with picky feeding zones, the Semi-Long is designed with gliding performance particularly effective for yellowtail. The body is shaped to be slender with emphasized edges, and balanced to maintain a horizontal posture without losing horizontal propulsion.

After enticing with a slide action comes the biting timing when the target attacks.
The Zero One's biting action is designed with the following concepts:
1. Maintain the biting time for as long as possible.
2. Utilize sinking gravity during the fall for automatic action.
3. Maintain a stable horizontal posture without rotation.

To prevent the jig from tilting forward due to the leader during the fall, the center of gravity is set towards the front, and the "Zero Edge" on the sides alternately disperses water flow to maintain left-right balance. To stabilize the horizontal posture during the fall for an extended period, balance has been achieved in all directions – front, back, left, and right. By receiving water resistance on the large body sides, it sinks. By falling more slowly, the jig can be kept in the feeding area for longer. The horizontal falling posture has also proven effective for situations like targeting tuna feeding on bait balls, and it is no exception for bottom-dwelling yellowtail.