Tungsten alloy fishing sinkers are weights used to force a lure or bait to increase its sink rate , anchoring ability, and casting distance. They are formed into nearly innumerable shapes for diverse fishing applications.
Nowadays, a popular approach to weighting down soft plastics is the advent of small tungsten nail sinkers to add small amounts of weight internally to soft plastic lures.
Fishing jigs which compose of metal alloy sinker and a hook are one type of fishing lures and are one of most productive baits today, especially in water clarities from slightly murky to clear.
Tungsten worm weights, also called tungsten barrel weights in some countries, are known as "Diamond Series" because of they are drilled, beveled and diamond polished to avoid damaging the line.