Fluorocarbon swivels appear invisible in the water, are neutrally buoyant, and virtually indestructible. Tie one on to the end of your leader and add 2-3 feet of tippet for a “no twist” system when fishing streamers and baitfish imitations, fresh and saltwater. INVISA-SWIVEL also makes it simple to attach wire or mono bite tippets. Non-corrosive and maintenance free.