Jigging World 3 Way Swivel with Duo Lock Snap comes 10 pieces per pack. This terminal tackle is commonly used when bait fishing for Striped Bass and while drifting for Fluke aka Summer Flounder. You would tie your leader or main line onto one open ring and tie a long piece of leader with a snelled hook onto the last open ring. Put the appropriate sinker onto the duo lock snap and your rig is ready to go!