The Boone Barrel Swivel is a small terminal tackle item consisting of two rings connected to a pivoting joint. The Boone Barrel Swivel attaches to the main line on one end and a leader on the other end often finished by a hook, lure or sinker. The main use of the Boone barrel swivel is to allow the line to untwist during line retrieval, preventing undesirable tangling. A secondary benefit of the fishing swivel is that it may stop a sliding sinker, which depending on fishing method may be placed before or after the swivel. We offer the Boone Barrel Swivel in seven sizes of the black color. Quantity varies.