When you hear the word “swivel”, your mind probably pictures the most common type; the barrel swivel. A barrel swivel is nothing more than an (oftentimes) small line “connector”. In the most basic terms, this type of swivel allows an angler to tie two separate sections of line to each of its ends. The swivel then allows each section of line to rotate independently of each other.
Barrel Swivels are particularly useful when fish ultra-deepwater with a drop shot rig and the fishing line has the tendency to twist many times when reeling in. This twisting decreases the overall strength of the line and can cause breakage well below its poundage rating. Barrel swivels are also useful when fishing baits like weightless flukes, senkos, and pre-rigged worms. The constant flipping and twirling motion of these baits tend to also cause line twist and cause bad hook sets and unnecessary breakages.