The Heavy Duty Sliding Swivel is a must for any fisherman looking for an extra advantage when it comes to bait fishing. This unigue swivel is used to attach your weight above your leader. since the swivel is not fixed, a fish can swim away with your bait without feeling your weight. This stealthy technique is great for catfish, striped bass, sturgeon or any species which requires your bait to be on the bottom. 3 per pack