these gives you TWICE the rotating points as a regular swivel. Use these when you are making crawler rigs for the ultimate inline twist protection. It resists twisting the leaders and twisting the line or cord with baits. it are ideal for ultralight rigs, It is used in all types of fishing. The perfect terminal tackle solution for everything from trout to albacore, it made of stainless steel, sturdy construction, high strength, excellent abrasion resistance. smoothly polishing ring. Should be in your fishing tackle box, Small profile and weight, almost no effect on lures action. A perfect choice for kayaking fishing, drifting fishing, rock fishing, bass fishing, fly fishing.syi