The Danielson Barrel Swivel is a small terminal tackle item consisting of two rings connected to a pivoting joint. The Danielson 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 Danielson 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 Danielson Barrel Swivel in nine sizes of the black color. Quantity varies, see below.