"Slip" by your fish undetected. The line will slip through the Egg or Slip sinker, so the fish will not feel the weight of the sinker when it picks up the bait. The hook settles more quickly without the sinker's resistance. Plus, the fish can't use the sinker's weight to help throw the hook when breaking water. This fish won't be the one that "got away." Each mold comes with one pull pin. Extra's can be purchased.