These gremlin green slip sinkers are made of bismuth, a non-toxic metal which is nearly as dense as lead. They should fish just like the lead sinkers they replace. Bismuth is a brittle metal which can fracture is struck hard enough. These sinkers are wrapped with a tough plastic coating to hold them together in case they crack. Please don't peel the plastic off.
Another versatile sinker from Water Gremlin because of its ability to swivel on the looped brass wire. Dipsey Swivel is commonly used for trolling or bottom fishing with live bait.