Water Gremlinƒ??s Snap-Loc?? Dipsey Swivel is one of the worldƒ??s most versatile, easy-to-use sinkers. It works great for bottom or drift fishing. Snap-Locƒ??s?? patented eye easily snaps on and off your line. Thereƒ??s no twisting, tying, fuss or line damage. The Snap-Loc?? eye is great for free-line fishing because it slides free on your line and goes right to the bottom. And that means the fish can take your bait without feeling the sinker weight.