A fishing sinker or plummet is a weight used to force a lure or
bait to increase its rate of sink, anchoring ability, and/or
Fishing sinkers may be as small as 1/32 of an ounce for
applications in shallow water, even smaller for fly fishing
applications, or as large as several pounds or considerably more
for deep sea fishing. They are formed into nearly innumerable
shapes for diverse fishing applications.