Tsunami Black Interlock Snap Swivels are a range of interlock swivels for light to medium-heavy use by active rig fishers in any fresh or saltwater environment. They are a popular attachment to the end of a mainline to facilitate quick leader replacements, can be tied to the end of leaders for quick lure replacements, or used as rigging ends for wire traces.Tsunami Black Interlock Snap Swivels are made of the highest grade materials. Classic barrel swivels are combined with an interlocking snap, made with a flat plate housing into which the snap wire locks for a secure connection. All pieces are pre-tested for quality and durability. Packaged in resealable zip locking bags, all Tsunami swivels offer a great value for any fisher’s tackle box. High-end Materials Reduction in line Twist Solid Construction Range of Sizes 39334 Size 4 Tsunami Black Interlock Swivels With Snap (Quantity 12)  Lbs 52